diff --git a/src/draw.c b/src/draw.c
index c5ae067c..12a0e703 100644
--- a/src/draw.c
+++ b/src/draw.c
@@ -493,7 +493,7 @@ static void frame_border_complex(MwWidget handle, MwRect* rect, MwLLColor lighte
 static void MwDrawFrameEx_complex(MwWidget handle, MwRect* rect, MwLLColor color, int invert, int border, int diff, int same, int rounded) {
 	int	  ColorDiff = get_color_diff(handle);
 	MwLLColor darker    = MwLightenColor(handle, color, -ColorDiff * 3 / 2 + diff, -ColorDiff * 3 / 2 + diff, -ColorDiff * 3 / 2 + diff);
-	MwLLColor lighter   = same ? MwLightenColor(handle, darker, 0, 0, 0) : MwLightenColor(handle, color, ColorDiff - diff, ColorDiff - diff, ColorDiff - diff);
+	MwLLColor lighter   = same ? MwLightenColor(handle, darker, 0, 0, 0) : MwLightenColor(handle, color, (ColorDiff / 2) - diff, (ColorDiff / 2) - diff, (ColorDiff / 2) - diff);
 	MwRect	  r	    = *rect;
 
 	frame_border_complex(handle, rect, lighter, darker, invert, border, diff, same, rounded);