diff --git a/programs/cmm/lib/patterns/rgb.h b/programs/cmm/lib/patterns/rgb.h
index 869e840ffd..a837aa736c 100644
--- a/programs/cmm/lib/patterns/rgb.h
+++ b/programs/cmm/lib/patterns/rgb.h
@@ -4,7 +4,7 @@ struct _rgb
 	byte r,g,b;
 	void DwordToRgb();
 	dword RgbToDword();
-};
+} rgb;
 
 void _rgb::DwordToRgb(dword _dword)
 {
@@ -21,9 +21,9 @@ dword _rgb::RgbToDword()
 	return _b + _g + r;
 }
 
-dword MixColors(dword _base, _overlying, byte a) 
+:dword MixColors(dword _base, _overlying, byte a) 
 {
-	_rgb rgb1, rgb2, rgb;
+	_rgb rgb1, rgb2, rgb_final;
 	byte n_a;
 
 	rgb1.DwordToRgb(_base);
@@ -31,9 +31,9 @@ dword MixColors(dword _base, _overlying, byte a)
 
 	n_a = 255 - a;
 
-	rgb.b = calc(rgb1.b*a/255) + calc(rgb2.b*n_a/255);
-	rgb.g = calc(rgb1.g*a/255) + calc(rgb2.g*n_a/255);
-	rgb.r = calc(rgb1.r*a/255) + calc(rgb2.r*n_a/255);
+	rgb_final.b = calc(rgb1.b*a/255) + calc(rgb2.b*n_a/255);
+	rgb_final.g = calc(rgb1.g*a/255) + calc(rgb2.g*n_a/255);
+	rgb_final.r = calc(rgb1.r*a/255) + calc(rgb2.r*n_a/255);
 
-	return rgb.RgbToDword();
+	return rgb_final.RgbToDword();
 }