diff --git a/source/blender/blenkernel/intern/colortools.c b/source/blender/blenkernel/intern/colortools.c
index 86d7cbf0133..1be1b9b9ad0 100644
--- a/source/blender/blenkernel/intern/colortools.c
+++ b/source/blender/blenkernel/intern/colortools.c
@@ -956,13 +956,11 @@ void curvemapping_table_RGBA(CurveMapping *cumap, float **array, int *size)
 
 DO_INLINE int get_bin_float(float f)
 {
-	int bin= (int)(f*255);
+	int bin= (int)((f*255) + 0.5);	/* 0.5 to prevent quantisation differences */
 
 	/* note: clamp integer instead of float to avoid problems with NaN */
 	CLAMP(bin, 0, 255);
-	
-	//return (int) (((f + 0.25) / 1.5) * 255);
-	
+
 	return bin;
 }