diff --git a/headers/private/servers/app/ColorSet.h b/headers/private/servers/app/ColorSet.h
index 45669370a8..0e6d6b1004 100644
--- a/headers/private/servers/app/ColorSet.h
+++ b/headers/private/servers/app/ColorSet.h
@@ -49,6 +49,7 @@ public:
 	bool ConvertFromMessage(const BMessage *msg);
 	void SetToDefaults(void);
 	RGBColor StringToColor(const char *string);
+	RGBColor AttributeToColor(int32 which);
 	status_t SetColor(const char *string, rgb_color value);
 	
 	BString name;