diff --git a/osu.Game.Rulesets.Osu/Difficulty/OsuDifficultyCalculator.cs b/osu.Game.Rulesets.Osu/Difficulty/OsuDifficultyCalculator.cs
index fe430915f4..d30f556c77 100644
--- a/osu.Game.Rulesets.Osu/Difficulty/OsuDifficultyCalculator.cs
+++ b/osu.Game.Rulesets.Osu/Difficulty/OsuDifficultyCalculator.cs
@@ -146,11 +146,8 @@ namespace osu.Game.Rulesets.Osu.Difficulty
 
         public static double SumCognitionDifficulty(double reading, double flashlight)
         {
-            // Base LP summed value, accounting for map being partially memorized with FL
-            double cognition = DifficultyCalculationUtils.Norm(2, reading, flashlight);
-
-            // Inrease FL bonus when it's lower than reading to avoid situations where high reading difficulty makes FL give practically 0 bonus
-            return flashlight >= reading ? cognition : double.Lerp(reading + flashlight, cognition, flashlight / reading);
+            // Nerf flashlight value in cognition sum when reading is greater than flashlight
+            return DifficultyCalculationUtils.Norm(OsuPerformanceCalculator.PERFORMANCE_NORM_EXPONENT, reading, flashlight * Math.Clamp(flashlight / reading, 0.25, 1.0));
         }
 
         private double calculateStarRating(double basePerformance)