diff --git a/src/gui/color.cpp b/src/gui/color.cpp
index d4e7e0fad..03de02f77 100644
--- a/src/gui/color.cpp
+++ b/src/gui/color.cpp
@@ -39,9 +39,9 @@
 
 int convertSetupColor2RGB(const unsigned char r, const unsigned char g, const unsigned char b)
 {
-	unsigned char red =  	int( float(255./100.)*float(r) );
-	unsigned char green =  	int( float(255./100.)*float(g) );
-	unsigned char blue =  	int( float(255./100.)*float(b) );
+	unsigned char red =	(int)r * 255 / 100;
+	unsigned char green =	(int)g * 255 / 100;
+	unsigned char blue =	(int)b * 255 / 100;
 
 	return (red << 16) | (green << 8) | blue;
 }
@@ -50,8 +50,8 @@ int convertSetupAlpha2Alpha(unsigned char alpha)
 {
 	if(alpha == 0) return 0xFF;
 	else if(alpha >= 100) return 0;
-	unsigned char a = 100 - alpha;
-	int ret = int( float(0xFF/100.)*float(a) );
+	int a = 100 - alpha;
+	int ret = a * 0xFF / 100;
 	return ret;
 }
 
@@ -61,7 +61,7 @@ void recalcColor(unsigned char &orginal, int fade)
 	{
 		return;
 	}
-	int color =  int( float( float(orginal) * float( float(fade) / 100.0)) );
+	int color =  orginal * fade / 100;
 	if(color>255)
 		color=255;
 	if(color<0)