diff --git a/gtk/Makefile b/gtk/Makefile
index f7863107f..3d380dc99 100644
--- a/gtk/Makefile
+++ b/gtk/Makefile
@@ -18,6 +18,6 @@ clean:
 
 .depend: $(SRCS) Makefile
 	$(RM) .depend
-	$(foreach SRC, $(SRCS), $(CC) -MM $(SRC) -D__TRANSMISSION__ >> .depend;)
+	$(foreach SRC, $(SRCS), $(CC) -MM $(SRC) $(CFLAGS) -D__TRANSMISSION__ >> .depend;)
 
 include .depend