diff --git a/WINGs/Makefile.am b/WINGs/Makefile.am
index 96f6d79..7d7b497 100644
--- a/WINGs/Makefile.am
+++ b/WINGs/Makefile.am
@@ -41,7 +41,7 @@ libWINGs_la_SOURCES = 	\
 	wcolor.c \
 	wcolor_x11.c \
 	wcolor_wl.c \
-	wcolorpanel.c \
+	wcolorpanel_x11.c \
 	wcolorwell.c \
 	wconfig.h \
 	wevent.c \
diff --git a/WINGs/wcolorpanel.c b/WINGs/wcolorpanel_x11.c
similarity index 100%
rename from WINGs/wcolorpanel.c
rename to WINGs/wcolorpanel_x11.c