diff --git a/lime/math/color/ARGB.hx b/lime/math/color/ARGB.hx
index 90ef6902e..90faa9894 100644
--- a/lime/math/color/ARGB.hx
+++ b/lime/math/color/ARGB.hx
@@ -6,7 +6,7 @@ import lime.utils.UInt32Array;
 import lime.utils.UInt8Array;
 
 
-abstract ARGB(UInt) from Int to Int from UInt to UInt {
+abstract ARGB(#if flash Int #else UInt #end) from Int to Int from UInt to UInt {
 	
 	
 	private static var a16:Int;
diff --git a/lime/math/color/BGRA.hx b/lime/math/color/BGRA.hx
index 607a81dc8..17a30adbf 100644
--- a/lime/math/color/BGRA.hx
+++ b/lime/math/color/BGRA.hx
@@ -6,7 +6,7 @@ import lime.utils.UInt32Array;
 import lime.utils.UInt8Array;
 
 
-abstract BGRA(UInt) from Int to Int from UInt to UInt {
+abstract BGRA(#if flash Int #else UInt #end) from Int to Int from UInt to UInt {
 	
 	
 	private static var a16:Int;
diff --git a/lime/math/color/RGBA.hx b/lime/math/color/RGBA.hx
index c89a751b7..a128c205e 100644
--- a/lime/math/color/RGBA.hx
+++ b/lime/math/color/RGBA.hx
@@ -8,7 +8,7 @@ import lime.utils.UInt8Array;
 @:allow(lime.math.color)
 
 
-abstract RGBA(UInt) from Int to Int from UInt to UInt {
+abstract RGBA(#if flash Int #else UInt #end) from Int to Int from UInt to UInt {
 	
 	
 	private static var __alpha16:UInt32Array;