diff --git a/launcher/minecraft/mod/MetadataHandler.h b/launcher/minecraft/mod/MetadataHandler.h
index 0b8cb124d..5f12348ae 100644
--- a/launcher/minecraft/mod/MetadataHandler.h
+++ b/launcher/minecraft/mod/MetadataHandler.h
@@ -19,27 +19,16 @@
 
 #pragma once
 
-#include <memory>
-
 #include "modplatform/packwiz/Packwiz.h"
 
-// launcher/minecraft/mod/Mod.h
-class Mod;
-
 namespace Metadata {
 using ModStruct = Packwiz::V1::Mod;
-using ModSide = Packwiz::V1::Side;
 
-inline auto create(const QDir& index_dir, ModPlatform::IndexedPack& mod_pack, ModPlatform::IndexedVersion& mod_version) -> ModStruct
+inline ModStruct create(const QDir& index_dir, ModPlatform::IndexedPack& mod_pack, ModPlatform::IndexedVersion& mod_version)
 {
     return Packwiz::V1::createModFormat(index_dir, mod_pack, mod_version);
 }
 
-inline auto create(const QDir& index_dir, Mod& internal_mod, QString mod_slug) -> ModStruct
-{
-    return Packwiz::V1::createModFormat(index_dir, internal_mod, std::move(mod_slug));
-}
-
 inline void update(const QDir& index_dir, ModStruct& mod)
 {
     Packwiz::V1::updateModIndex(index_dir, mod);
@@ -50,24 +39,14 @@ inline void remove(const QDir& index_dir, QString mod_slug)
     Packwiz::V1::deleteModIndex(index_dir, mod_slug);
 }
 
-inline void remove(const QDir& index_dir, QVariant& mod_id)
-{
-    Packwiz::V1::deleteModIndex(index_dir, mod_id);
-}
-
-inline auto get(const QDir& index_dir, QString mod_slug) -> ModStruct
+inline ModStruct get(const QDir& index_dir, QString mod_slug)
 {
     return Packwiz::V1::getIndexForMod(index_dir, std::move(mod_slug));
 }
 
-inline auto get(const QDir& index_dir, QVariant& mod_id) -> ModStruct
+inline ModStruct get(const QDir& index_dir, QVariant& mod_id)
 {
     return Packwiz::V1::getIndexForMod(index_dir, mod_id);
 }
 
-inline auto modSideToString(ModSide side) -> QString
-{
-    return Packwiz::V1::sideToString(side);
-}
-
 };  // namespace Metadata
diff --git a/launcher/minecraft/mod/Mod.cpp b/launcher/minecraft/mod/Mod.cpp
index 99fc39ce0..e9ca2e682 100644
--- a/launcher/minecraft/mod/Mod.cpp
+++ b/launcher/minecraft/mod/Mod.cpp
@@ -179,9 +179,9 @@ auto Mod::loaders() const -> QString
 auto Mod::side() const -> QString
 {
     if (metadata())
-        return Metadata::modSideToString(metadata()->side);
+        return ModPlatform::SideUtils::toString(metadata()->side);
 
-    return Metadata::modSideToString(Metadata::ModSide::UniversalSide);
+    return ModPlatform::SideUtils::toString(ModPlatform::Side::UniversalSide);
 }
 
 auto Mod::mcVersions() const -> QString
diff --git a/launcher/modplatform/ModIndex.cpp b/launcher/modplatform/ModIndex.cpp
index 380ff660f..e18ccaefa 100644
--- a/launcher/modplatform/ModIndex.cpp
+++ b/launcher/modplatform/ModIndex.cpp
@@ -152,4 +152,29 @@ auto getModLoaderFromString(QString type) -> ModLoaderType
     return {};
 }
 
+QString SideUtils::toString(Side side)
+{
+    switch (side) {
+        case Side::ClientSide:
+            return "client";
+        case Side::ServerSide:
+            return "server";
+        case Side::UniversalSide:
+            return "both";
+        case Side::NoSide:
+            break;
+    }
+    return {};
+}
+
+Side SideUtils::fromString(QString side)
+{
+    if (side == "client")
+        return Side::ClientSide;
+    if (side == "server")
+        return Side::ServerSide;
+    if (side == "both")
+        return Side::UniversalSide;
+    return Side::UniversalSide;
+}
 }  // namespace ModPlatform
diff --git a/launcher/modplatform/ModIndex.h b/launcher/modplatform/ModIndex.h
index ad2503ea7..cfe4eba75 100644
--- a/launcher/modplatform/ModIndex.h
+++ b/launcher/modplatform/ModIndex.h
@@ -47,6 +47,13 @@ enum class ResourceType { MOD, RESOURCE_PACK, SHADER_PACK, MODPACK, DATA_PACK };
 
 enum class DependencyType { REQUIRED, OPTIONAL, INCOMPATIBLE, EMBEDDED, TOOL, INCLUDE, UNKNOWN };
 
+enum class Side { NoSide = 0, ClientSide = 1 << 0, ServerSide = 1 << 1, UniversalSide = ClientSide | ServerSide };
+
+namespace SideUtils {
+QString toString(Side side);
+Side fromString(QString side);
+}  // namespace SideUtils
+
 namespace ProviderCapabilities {
 const char* name(ResourceProvider);
 QString readableName(ResourceProvider);
@@ -114,7 +121,7 @@ struct IndexedVersion {
     bool is_preferred = true;
     QString changelog;
     QList<Dependency> dependencies;
-    QString side;  // this is for flame API
+    Side side;  // this is for flame API
 
     // For internal use, not provided by APIs
     bool is_currently_selected = false;
@@ -145,7 +152,7 @@ struct IndexedPack {
     QString logoName;
     QString logoUrl;
     QString websiteUrl;
-    QString side;
+    Side side;
 
     bool versionsLoaded = false;
     QList<IndexedVersion> versions;
diff --git a/launcher/modplatform/ResourceAPI.h b/launcher/modplatform/ResourceAPI.h
index 62a1ff199..bd6b90227 100644
--- a/launcher/modplatform/ResourceAPI.h
+++ b/launcher/modplatform/ResourceAPI.h
@@ -74,7 +74,7 @@ class ResourceAPI {
         std::optional<SortingMethod> sorting;
         std::optional<ModPlatform::ModLoaderTypes> loaders;
         std::optional<std::list<Version>> versions;
-        std::optional<QString> side;
+        std::optional<ModPlatform::Side> side;
         std::optional<QStringList> categoryIds;
         bool openSource;
     };
diff --git a/launcher/modplatform/flame/FlameModIndex.cpp b/launcher/modplatform/flame/FlameModIndex.cpp
index c1b9e67af..660dc159c 100644
--- a/launcher/modplatform/flame/FlameModIndex.cpp
+++ b/launcher/modplatform/flame/FlameModIndex.cpp
@@ -4,6 +4,7 @@
 #include "Json.h"
 #include "minecraft/MinecraftInstance.h"
 #include "minecraft/PackProfile.h"
+#include "modplatform/ModIndex.h"
 #include "modplatform/flame/FlameAPI.h"
 
 static FlameAPI api;
@@ -110,6 +111,7 @@ auto FlameMod::loadIndexedPackVersion(QJsonObject& obj, bool load_changelog) ->
         if (str.contains('.'))
             file.mcVersion.append(str);
 
+        file.side = ModPlatform::Side::NoSide;
         if (auto loader = str.toLower(); loader == "neoforge")
             file.loaders |= ModPlatform::NeoForge;
         else if (loader == "forge")
@@ -123,10 +125,10 @@ auto FlameMod::loadIndexedPackVersion(QJsonObject& obj, bool load_changelog) ->
         else if (loader == "quilt")
             file.loaders |= ModPlatform::Quilt;
         else if (loader == "server" || loader == "client") {
-            if (file.side.isEmpty())
-                file.side = loader;
-            else if (file.side != loader)
-                file.side = "both";
+            if (file.side == ModPlatform::Side::NoSide)
+                file.side = ModPlatform::SideUtils::fromString(loader);
+            else if (file.side != ModPlatform::SideUtils::fromString(loader))
+                file.side = ModPlatform::Side::UniversalSide;
         }
     }
 
diff --git a/launcher/modplatform/modrinth/ModrinthAPI.h b/launcher/modplatform/modrinth/ModrinthAPI.h
index 17b23723b..7c2592256 100644
--- a/launcher/modplatform/modrinth/ModrinthAPI.h
+++ b/launcher/modplatform/modrinth/ModrinthAPI.h
@@ -69,18 +69,20 @@ class ModrinthAPI : public NetworkResourceAPI {
         return l.join(',');
     }
 
-    static auto getSideFilters(QString side) -> const QString
+    static QString getSideFilters(ModPlatform::Side side)
     {
-        if (side.isEmpty()) {
-            return {};
+        switch (side) {
+            case ModPlatform::Side::ClientSide:
+                return QString("\"client_side:required\",\"client_side:optional\"],[\"server_side:optional\",\"server_side:unsupported\"");
+            case ModPlatform::Side::ServerSide:
+                return QString("\"server_side:required\",\"server_side:optional\"],[\"client_side:optional\",\"client_side:unsupported\"");
+            case ModPlatform::Side::UniversalSide:
+                return QString("\"client_side:required\"],[\"server_side:required\"");
+            case ModPlatform::Side::NoSide:
+            // fallthrough
+            default:
+                return {};
         }
-        if (side == "both")
-            return QString("\"client_side:required\"],[\"server_side:required\"");
-        if (side == "client")
-            return QString("\"client_side:required\",\"client_side:optional\"],[\"server_side:optional\",\"server_side:unsupported\"");
-        if (side == "server")
-            return QString("\"server_side:required\",\"server_side:optional\"],[\"client_side:optional\",\"client_side:unsupported\"");
-        return {};
     }
 
     [[nodiscard]] static inline QString mapMCVersionFromModrinth(QString v)
diff --git a/launcher/modplatform/modrinth/ModrinthPackExportTask.cpp b/launcher/modplatform/modrinth/ModrinthPackExportTask.cpp
index 4b19acd3f..9ee4101e6 100644
--- a/launcher/modplatform/modrinth/ModrinthPackExportTask.cpp
+++ b/launcher/modplatform/modrinth/ModrinthPackExportTask.cpp
@@ -28,6 +28,7 @@
 #include "minecraft/PackProfile.h"
 #include "minecraft/mod/MetadataHandler.h"
 #include "minecraft/mod/ModFolderModel.h"
+#include "modplatform/ModIndex.h"
 #include "modplatform/helpers/HashUtils.h"
 #include "tasks/Task.h"
 
@@ -289,7 +290,7 @@ QByteArray ModrinthPackExportTask::generateIndex()
 
         // a server side mod does not imply that the mod does not work on the client
         // however, if a mrpack mod is marked as server-only it will not install on the client
-        if (iterator->side == Metadata::ModSide::ClientSide)
+        if (iterator->side == ModPlatform::Side::ClientSide)
             env["server"] = "unsupported";
 
         fileOut["env"] = env;
diff --git a/launcher/modplatform/modrinth/ModrinthPackExportTask.h b/launcher/modplatform/modrinth/ModrinthPackExportTask.h
index ec4730de5..f9b86bbd7 100644
--- a/launcher/modplatform/modrinth/ModrinthPackExportTask.h
+++ b/launcher/modplatform/modrinth/ModrinthPackExportTask.h
@@ -23,6 +23,7 @@
 #include "BaseInstance.h"
 #include "MMCZip.h"
 #include "minecraft/MinecraftInstance.h"
+#include "modplatform/ModIndex.h"
 #include "modplatform/modrinth/ModrinthAPI.h"
 #include "tasks/Task.h"
 
@@ -45,7 +46,7 @@ class ModrinthPackExportTask : public Task {
     struct ResolvedFile {
         QString sha1, sha512, url;
         qint64 size;
-        Metadata::ModSide side;
+        ModPlatform::Side side;
     };
 
     static const QStringList PREFIXES;
diff --git a/launcher/modplatform/modrinth/ModrinthPackIndex.cpp b/launcher/modplatform/modrinth/ModrinthPackIndex.cpp
index 744b058c0..42fda9df1 100644
--- a/launcher/modplatform/modrinth/ModrinthPackIndex.cpp
+++ b/launcher/modplatform/modrinth/ModrinthPackIndex.cpp
@@ -63,11 +63,11 @@ void Modrinth::loadIndexedPack(ModPlatform::IndexedPack& pack, QJsonObject& obj)
     auto server = shouldDownloadOnSide(Json::ensureString(obj, "server_side"));
 
     if (server && client) {
-        pack.side = "both";
+        pack.side = ModPlatform::Side::UniversalSide;
     } else if (server) {
-        pack.side = "server";
+        pack.side = ModPlatform::Side::ServerSide;
     } else if (client) {
-        pack.side = "client";
+        pack.side = ModPlatform::Side::ClientSide;
     }
 
     // Modrinth can have more data than what's provided by the basic search :)
diff --git a/launcher/modplatform/packwiz/Packwiz.cpp b/launcher/modplatform/packwiz/Packwiz.cpp
index a3bb74399..0660d611c 100644
--- a/launcher/modplatform/packwiz/Packwiz.cpp
+++ b/launcher/modplatform/packwiz/Packwiz.cpp
@@ -28,7 +28,6 @@
 #include "FileSystem.h"
 #include "StringUtils.h"
 
-#include "minecraft/mod/Mod.h"
 #include "modplatform/ModIndex.h"
 
 #include <toml++/toml.h>
@@ -113,7 +112,7 @@ auto V1::createModFormat([[maybe_unused]] const QDir& index_dir,
     mod.provider = mod_pack.provider;
     mod.file_id = mod_version.fileId;
     mod.project_id = mod_pack.addonId;
-    mod.side = stringToSide(mod_version.side.isEmpty() ? mod_pack.side : mod_version.side);
+    mod.side = mod_version.side == ModPlatform::Side::NoSide ? mod_pack.side : mod_version.side;
     mod.loaders = mod_version.loaders;
     mod.mcVersions = mod_version.mcVersion;
     mod.mcVersions.sort();
@@ -126,18 +125,6 @@ auto V1::createModFormat([[maybe_unused]] const QDir& index_dir,
     return mod;
 }
 
-auto V1::createModFormat(const QDir& index_dir, [[maybe_unused]] ::Mod& internal_mod, QString slug) -> Mod
-{
-    // Try getting metadata if it exists
-    Mod mod{ getIndexForMod(index_dir, slug) };
-    if (mod.isValid())
-        return mod;
-
-    qWarning() << QString("Tried to create mod metadata with a Mod without metadata!");
-
-    return {};
-}
-
 void V1::updateModIndex(const QDir& index_dir, Mod& mod)
 {
     if (!mod.isValid()) {
@@ -208,7 +195,7 @@ void V1::updateModIndex(const QDir& index_dir, Mod& mod)
     {
         auto tbl = toml::table{ { "name", mod.name.toStdString() },
                                 { "filename", mod.filename.toStdString() },
-                                { "side", sideToString(mod.side).toStdString() },
+                                { "side", ModPlatform::SideUtils::toString(mod.side).toStdString() },
                                 { "x-prismlauncher-loaders", loaders },
                                 { "x-prismlauncher-mc-versions", mcVersions },
                                 { "x-prismlauncher-release-type", mod.releaseType.toString().toStdString() },
@@ -249,18 +236,6 @@ void V1::deleteModIndex(const QDir& index_dir, QString& mod_slug)
     }
 }
 
-void V1::deleteModIndex(const QDir& index_dir, QVariant& mod_id)
-{
-    for (auto& file_name : index_dir.entryList(QDir::Filter::Files)) {
-        auto mod = getIndexForMod(index_dir, file_name);
-
-        if (mod.mod_id() == mod_id) {
-            deleteModIndex(index_dir, mod.name);
-            break;
-        }
-    }
-}
-
 auto V1::getIndexForMod(const QDir& index_dir, QString slug) -> Mod
 {
     Mod mod;
@@ -296,7 +271,7 @@ auto V1::getIndexForMod(const QDir& index_dir, QString slug) -> Mod
     {  // Basic info
         mod.name = stringEntry(table, "name");
         mod.filename = stringEntry(table, "filename");
-        mod.side = stringToSide(stringEntry(table, "side"));
+        mod.side = ModPlatform::SideUtils::fromString(stringEntry(table, "side"));
         mod.releaseType = ModPlatform::IndexedVersionType(table["x-prismlauncher-release-type"].value_or(""));
         if (auto loaders = table["x-prismlauncher-loaders"]; loaders && loaders.is_array()) {
             for (auto&& loader : *loaders.as_array()) {
@@ -371,28 +346,4 @@ auto V1::getIndexForMod(const QDir& index_dir, QVariant& mod_id) -> Mod
     return {};
 }
 
-auto V1::sideToString(Side side) -> QString
-{
-    switch (side) {
-        case Side::ClientSide:
-            return "client";
-        case Side::ServerSide:
-            return "server";
-        case Side::UniversalSide:
-            return "both";
-    }
-    return {};
-}
-
-auto V1::stringToSide(QString side) -> Side
-{
-    if (side == "client")
-        return Side::ClientSide;
-    if (side == "server")
-        return Side::ServerSide;
-    if (side == "both")
-        return Side::UniversalSide;
-    return Side::UniversalSide;
-}
-
 }  // namespace Packwiz
diff --git a/launcher/modplatform/packwiz/Packwiz.h b/launcher/modplatform/packwiz/Packwiz.h
index 44896e74c..ba9a0fe75 100644
--- a/launcher/modplatform/packwiz/Packwiz.h
+++ b/launcher/modplatform/packwiz/Packwiz.h
@@ -27,23 +27,18 @@
 
 class QDir;
 
-// Mod from launcher/minecraft/mod/Mod.h
-class Mod;
-
 namespace Packwiz {
 
 auto getRealIndexName(const QDir& index_dir, QString normalized_index_name, bool should_match = false) -> QString;
 
 class V1 {
    public:
-    enum class Side { ClientSide = 1 << 0, ServerSide = 1 << 1, UniversalSide = ClientSide | ServerSide };
-
     // can also represent other resources beside loader mods - but this is what packwiz calls it
     struct Mod {
         QString slug{};
         QString name{};
         QString filename{};
-        Side side{ Side::UniversalSide };
+        ModPlatform::Side side{ ModPlatform::Side::UniversalSide };
         ModPlatform::ModLoaderTypes loaders;
         QStringList mcVersions;
         ModPlatform::IndexedVersionType releaseType;
@@ -74,10 +69,6 @@ class V1 {
      * its common representation in the launcher, when downloading mods.
      * */
     static auto createModFormat(const QDir& index_dir, ModPlatform::IndexedPack& mod_pack, ModPlatform::IndexedVersion& mod_version) -> Mod;
-    /* Generates the object representing the information in a mod.pw.toml file via
-     * its common representation in the launcher, plus a necessary slug.
-     * */
-    static auto createModFormat(const QDir& index_dir, ::Mod& internal_mod, QString slug) -> Mod;
 
     /* Updates the mod index for the provided mod.
      * This creates a new index if one does not exist already
@@ -88,9 +79,6 @@ class V1 {
     /* Deletes the metadata for the mod with the given slug. If the metadata doesn't exist, it does nothing. */
     static void deleteModIndex(const QDir& index_dir, QString& mod_slug);
 
-    /* Deletes the metadata for the mod with the given id. If the metadata doesn't exist, it does nothing. */
-    static void deleteModIndex(const QDir& index_dir, QVariant& mod_id);
-
     /* Gets the metadata for a mod with a particular file name.
      * If the mod doesn't have a metadata, it simply returns an empty Mod object.
      * */
@@ -100,9 +88,6 @@ class V1 {
      * If the mod doesn't have a metadata, it simply returns an empty Mod object.
      * */
     static auto getIndexForMod(const QDir& index_dir, QVariant& mod_id) -> Mod;
-
-    static auto sideToString(Side side) -> QString;
-    static auto stringToSide(QString side) -> Side;
 };
 
 }  // namespace Packwiz
diff --git a/launcher/ui/pages/modplatform/ModModel.cpp b/launcher/ui/pages/modplatform/ModModel.cpp
index 6e98a88bc..32e6f2146 100644
--- a/launcher/ui/pages/modplatform/ModModel.cpp
+++ b/launcher/ui/pages/modplatform/ModModel.cpp
@@ -7,6 +7,7 @@
 #include "minecraft/MinecraftInstance.h"
 #include "minecraft/PackProfile.h"
 #include "minecraft/mod/ModFolderModel.h"
+#include "modplatform/ModIndex.h"
 
 #include <QMessageBox>
 #include <algorithm>
@@ -101,9 +102,10 @@ QVariant ModModel::getInstalledPackVersion(ModPlatform::IndexedPack::Ptr pack) c
     return {};
 }
 
-bool checkSide(QString filter, QString value)
+bool checkSide(ModPlatform::Side filter, ModPlatform::Side value)
 {
-    return filter.isEmpty() || value.isEmpty() || filter == "both" || value == "both" || filter == value;
+    return filter == ModPlatform::Side::NoSide || value == ModPlatform::Side::NoSide || filter == ModPlatform::Side::UniversalSide ||
+           value == ModPlatform::Side::UniversalSide || filter == value;
 }
 
 bool ModModel::checkFilters(ModPlatform::IndexedPack::Ptr pack)
diff --git a/launcher/ui/pages/modplatform/flame/FlameModel.cpp b/launcher/ui/pages/modplatform/flame/FlameModel.cpp
index 9255ccf1e..e67e4fb38 100644
--- a/launcher/ui/pages/modplatform/flame/FlameModel.cpp
+++ b/launcher/ui/pages/modplatform/flame/FlameModel.cpp
@@ -187,8 +187,9 @@ void ListModel::performPaginatedSearch()
     sort.index = currentSort + 1;
 
     auto netJob = makeShared<NetJob>("Flame::Search", APPLICATION->network());
-    auto searchUrl = FlameAPI().getSearchURL({ ModPlatform::ResourceType::MODPACK, nextSearchOffset, currentSearchTerm, sort,
-                                               m_filter->loaders, m_filter->versions, "", m_filter->categoryIds, m_filter->openSource });
+    auto searchUrl =
+        FlameAPI().getSearchURL({ ModPlatform::ResourceType::MODPACK, nextSearchOffset, currentSearchTerm, sort, m_filter->loaders,
+                                  m_filter->versions, ModPlatform::Side::NoSide, m_filter->categoryIds, m_filter->openSource });
 
     netJob->addNetAction(Net::ApiDownload::makeByteArray(QUrl(searchUrl.value()), response));
     jobPtr = netJob;
diff --git a/launcher/ui/pages/modplatform/modrinth/ModrinthModel.cpp b/launcher/ui/pages/modplatform/modrinth/ModrinthModel.cpp
index e84903cfd..870b47beb 100644
--- a/launcher/ui/pages/modplatform/modrinth/ModrinthModel.cpp
+++ b/launcher/ui/pages/modplatform/modrinth/ModrinthModel.cpp
@@ -153,8 +153,9 @@ void ModpackListModel::performPaginatedSearch()
     }  // TODO: Move to standalone API
     ResourceAPI::SortingMethod sort{};
     sort.name = currentSort;
-    auto searchUrl = ModrinthAPI().getSearchURL({ ModPlatform::ResourceType::MODPACK, nextSearchOffset, currentSearchTerm, sort,
-                                                  m_filter->loaders, m_filter->versions, "", m_filter->categoryIds, m_filter->openSource });
+    auto searchUrl =
+        ModrinthAPI().getSearchURL({ ModPlatform::ResourceType::MODPACK, nextSearchOffset, currentSearchTerm, sort, m_filter->loaders,
+                                     m_filter->versions, ModPlatform::Side::NoSide, m_filter->categoryIds, m_filter->openSource });
 
     auto netJob = makeShared<NetJob>("Modrinth::SearchModpack", APPLICATION->network());
     netJob->addNetAction(Net::ApiDownload::makeByteArray(QUrl(searchUrl.value()), m_allResponse));
diff --git a/launcher/ui/widgets/ModFilterWidget.cpp b/launcher/ui/widgets/ModFilterWidget.cpp
index 527efc32a..3c6a2db07 100644
--- a/launcher/ui/widgets/ModFilterWidget.cpp
+++ b/launcher/ui/widgets/ModFilterWidget.cpp
@@ -218,7 +218,7 @@ void ModFilterWidget::prepareBasicFilter()
     m_filter->openSource = false;
     if (m_instance) {
         m_filter->hideInstalled = false;
-        m_filter->side = "";  // or "both"
+        m_filter->side = ModPlatform::Side::NoSide;  // or "both"
         ModPlatform::ModLoaderTypes loaders;
         if (m_instance->settings()->get("OverrideModDownloadLoaders").toBool()) {
             for (auto loader : Json::toStringList(m_instance->settings()->get("ModDownloadLoaders").toString())) {
@@ -287,16 +287,16 @@ void ModFilterWidget::onLoadersFilterChanged()
 
 void ModFilterWidget::onSideFilterChanged()
 {
-    QString side;
+    ModPlatform::Side side;
 
     if (ui->clientSide->isChecked() && !ui->serverSide->isChecked()) {
-        side = "client";
+        side = ModPlatform::Side::ClientSide;
     } else if (!ui->clientSide->isChecked() && ui->serverSide->isChecked()) {
-        side = "server";
+        side = ModPlatform::Side::ServerSide;
     } else if (ui->clientSide->isChecked() && ui->serverSide->isChecked()) {
-        side = "both";
+        side = ModPlatform::Side::UniversalSide;
     } else {
-        side = "";
+        side = ModPlatform::Side::NoSide;
     }
 
     m_filter_changed = side != m_filter->side;
diff --git a/launcher/ui/widgets/ModFilterWidget.h b/launcher/ui/widgets/ModFilterWidget.h
index 88f2593dd..be60ba70a 100644
--- a/launcher/ui/widgets/ModFilterWidget.h
+++ b/launcher/ui/widgets/ModFilterWidget.h
@@ -61,7 +61,7 @@ class ModFilterWidget : public QTabWidget {
         std::list<Version> versions;
         std::list<ModPlatform::IndexedVersionType> releases;
         ModPlatform::ModLoaderTypes loaders;
-        QString side;
+        ModPlatform::Side side;
         bool hideInstalled;
         QStringList categoryIds;
         bool openSource;
diff --git a/tests/Packwiz_test.cpp b/tests/Packwiz_test.cpp
index e4abda9f9..1fcb1b9f9 100644
--- a/tests/Packwiz_test.cpp
+++ b/tests/Packwiz_test.cpp
@@ -19,6 +19,7 @@
 
 #include <QTemporaryDir>
 #include <QTest>
+#include "modplatform/ModIndex.h"
 
 #include <modplatform/packwiz/Packwiz.h>
 
@@ -42,7 +43,7 @@ class PackwizTest : public QObject {
 
         QCOMPARE(metadata.name, "Borderless Mining");
         QCOMPARE(metadata.filename, "borderless-mining-1.1.1+1.18.jar");
-        QCOMPARE(metadata.side, Packwiz::V1::Side::ClientSide);
+        QCOMPARE(metadata.side, ModPlatform::Side::ClientSide);
 
         QCOMPARE(metadata.url, QUrl("https://cdn.modrinth.com/data/kYq5qkSL/versions/1.1.1+1.18/borderless-mining-1.1.1+1.18.jar"));
         QCOMPARE(metadata.hash_format, "sha512");
@@ -72,7 +73,7 @@ class PackwizTest : public QObject {
 
         QCOMPARE(metadata.name, "Screenshot to Clipboard (Fabric)");
         QCOMPARE(metadata.filename, "screenshot-to-clipboard-1.0.7-fabric.jar");
-        QCOMPARE(metadata.side, Packwiz::V1::Side::UniversalSide);
+        QCOMPARE(metadata.side, ModPlatform::Side::UniversalSide);
 
         QCOMPARE(metadata.url, QUrl("https://edge.forgecdn.net/files/3509/43/screenshot-to-clipboard-1.0.7-fabric.jar"));
         QCOMPARE(metadata.hash_format, "murmur2");