diff --git a/osu.Game.Rulesets.Osu/Objects/Drawables/DrawableSliderBall.cs b/osu.Game.Rulesets.Osu/Objects/Drawables/DrawableSliderBall.cs
index 24c0d0fcf0..9b8b197804 100644
--- a/osu.Game.Rulesets.Osu/Objects/Drawables/DrawableSliderBall.cs
+++ b/osu.Game.Rulesets.Osu/Objects/Drawables/DrawableSliderBall.cs
@@ -66,8 +66,9 @@ namespace osu.Game.Rulesets.Osu.Objects.Drawables
             Slider slider = drawableSlider.HitObject;
             Position = slider.CurvePositionAt(completionProgress);
 
-            //0.1 / slider.Path.Distance is the additional progress needed to ensure the diff length is 0.1
-            var diff = slider.CurvePositionAt(completionProgress) - slider.CurvePositionAt(Math.Min(1, completionProgress + 0.1 / slider.Path.Distance));
+            // 0.1 / slider.Path.Distance is the additional progress needed to ensure the diff length is 0.1
+            double checkDistance = 0.1 / slider.Path.Distance;
+            var diff = slider.CurvePositionAt(Math.Min(1 - checkDistance, completionProgress)) - slider.CurvePositionAt(Math.Min(1, completionProgress + checkDistance));
 
             // Ensure the value is substantially high enough to allow for Atan2 to get a valid angle.
             // Needed for when near completion, or in case of a very short slider.