diff --git a/AceGUI-3.0/widgets/AceGUIWidget-ColorPicker.lua b/AceGUI-3.0/widgets/AceGUIWidget-ColorPicker.lua
index 671caea..3c071d2 100644
--- a/AceGUI-3.0/widgets/AceGUIWidget-ColorPicker.lua
+++ b/AceGUI-3.0/widgets/AceGUIWidget-ColorPicker.lua
@@ -19,7 +19,7 @@ local INVERTED_ALPHA = (WOW_PROJECT_ID ~= WOW_PROJECT_MAINLINE)
 Support functions
 -------------------------------------------------------------------------------]]
 local function ColorCallback(self, r, g, b, a, isAlpha)
-	if INVERTED_ALPHA then
+	if INVERTED_ALPHA and a then
 		a = 1 - a
 	end
 	if not self.HasAlpha then