diff --git a/launcher/modplatform/ModAPI.h b/launcher/modplatform/ModAPI.h
index 4230df0b..eb0de3f0 100644
--- a/launcher/modplatform/ModAPI.h
+++ b/launcher/modplatform/ModAPI.h
@@ -68,7 +68,7 @@ class ModAPI {
     {
         QString s;
         for(auto& ver : mcVersions){
-            s += QString("%1,").arg(ver.toString());
+            s += QString("\"%1\",").arg(ver.toString());
         }
         s.remove(s.length() - 1, 1); //remove last comma
         return s;
diff --git a/launcher/modplatform/modrinth/ModrinthAPI.h b/launcher/modplatform/modrinth/ModrinthAPI.h
index 79bc5175..6119a4df 100644
--- a/launcher/modplatform/modrinth/ModrinthAPI.h
+++ b/launcher/modplatform/modrinth/ModrinthAPI.h
@@ -79,11 +79,11 @@ class ModrinthAPI : public NetworkModAPI {
     {
         return QString(BuildConfig.MODRINTH_PROD_URL +
                        "/project/%1/version?"
-                       "game_versions=[%2]"
+                       "game_versions=[%2]&"
                        "loaders=[\"%3\"]")
-            .arg(args.addonId)
-            .arg(getGameVersionsString(args.mcVersions))
-            .arg(getModLoaderStrings(args.loaders).join("\",\""));
+            .arg(args.addonId,
+             getGameVersionsString(args.mcVersions),
+             getModLoaderStrings(args.loaders).join("\",\""));
     };
 
     auto getGameVersionsArray(std::list<Version> mcVersions) const -> QString