diff --git a/osu.Game.Rulesets.Mania/Mods/ManiaModDualStages.cs b/osu.Game.Rulesets.Mania/Mods/ManiaModDualStages.cs
index 1ba4ef9af1..3330d87e88 100644
--- a/osu.Game.Rulesets.Mania/Mods/ManiaModDualStages.cs
+++ b/osu.Game.Rulesets.Mania/Mods/ManiaModDualStages.cs
@@ -34,6 +34,10 @@ namespace osu.Game.Rulesets.Mania.Mods
         {
             var mrc = (ManiaRulesetContainer)rulesetContainer;
 
+            // Although this can work, for now let's not allow keymods for mania-specific beatmaps
+            if (mrc.IsForCurrentRuleset)
+                return;
+
             var newDefinitions = new List<StageDefinition>();
             foreach (var existing in mrc.Beatmap.Stages)
             {
diff --git a/osu.Game/Rulesets/UI/RulesetContainer.cs b/osu.Game/Rulesets/UI/RulesetContainer.cs
index bb4466208b..375af75347 100644
--- a/osu.Game/Rulesets/UI/RulesetContainer.cs
+++ b/osu.Game/Rulesets/UI/RulesetContainer.cs
@@ -154,7 +154,7 @@ namespace osu.Game.Rulesets.UI
         /// <summary>
         /// Whether the specified beatmap is assumed to be specific to the current ruleset.
         /// </summary>
-        protected readonly bool IsForCurrentRuleset;
+        public readonly bool IsForCurrentRuleset;
 
         public override ScoreProcessor CreateScoreProcessor() => new ScoreProcessor<TObject>(this);