diff --git a/osu.Game.Rulesets.Osu/Difficulty/OsuPerformanceCalculator.cs b/osu.Game.Rulesets.Osu/Difficulty/OsuPerformanceCalculator.cs
index 76e3e9d71e..4d1fa96baa 100644
--- a/osu.Game.Rulesets.Osu/Difficulty/OsuPerformanceCalculator.cs
+++ b/osu.Game.Rulesets.Osu/Difficulty/OsuPerformanceCalculator.cs
@@ -246,6 +246,7 @@ namespace osu.Game.Rulesets.Osu.Difficulty
             return flashlightValue;
         }
 
+        // https://www.desmos.com/calculator/knduquaytu
         private double calculateEffectiveMissCount(OsuDifficultyAttributes attributes)
         {
             // Guess the number of misses + slider breaks from combo