diff --git a/osu.Game.Rulesets.Mania/Difficulty/ManiaDifficultyCalculator.cs b/osu.Game.Rulesets.Mania/Difficulty/ManiaDifficultyCalculator.cs
index 520b9c1152..5d5adb8e66 100644
--- a/osu.Game.Rulesets.Mania/Difficulty/ManiaDifficultyCalculator.cs
+++ b/osu.Game.Rulesets.Mania/Difficulty/ManiaDifficultyCalculator.cs
@@ -34,7 +34,7 @@ namespace osu.Game.Rulesets.Mania.Difficulty
         public ManiaDifficultyCalculator(Ruleset ruleset, WorkingBeatmap beatmap)
             : base(ruleset, beatmap)
         {
-            isForCurrentRuleset = beatmap.BeatmapInfo.Ruleset.Equals(new ManiaRuleset().RulesetInfo);
+            isForCurrentRuleset = beatmap.BeatmapInfo.Ruleset.Equals(ruleset.RulesetInfo);
         }
 
         protected override DifficultyAttributes Calculate(IBeatmap beatmap, Mod[] mods, double timeRate)