diff --git a/src/cs/MonoGame.Extended/HslColor.cs b/src/cs/MonoGame.Extended/HslColor.cs
index 05a49f3f..628073d2 100644
--- a/src/cs/MonoGame.Extended/HslColor.cs
+++ b/src/cs/MonoGame.Extended/HslColor.cs
@@ -220,7 +220,7 @@ namespace MonoGame.Extended
             return new HslColor(
                 c1.H + t*(h2 - c1.H),
                 c1.S + t*(c2.S - c1.S),
-                c1.L + t*(c2.L - c2.L));
+                c1.L + t*(c2.L - c1.L));
         }
 
         public static HslColor FromRgb(Color color)
@@ -267,4 +267,4 @@ namespace MonoGame.Extended
             return new HslColor(h, s, l);
         }
     }
-}
\ No newline at end of file
+}