diff --git a/Makefile b/Makefile
index 1ea40b7..cdc8f4d 100644
--- a/Makefile
+++ b/Makefile
@@ -18,11 +18,11 @@ options:
 	@echo CC $<
 	@${CC} -c ${CFLAGS} $<
 
-${OBJ}: config.h config.mk
+${OBJ}: config.def.h config.mk
 
-config.h:
-	@echo creating $@ from config.def.h
-	@cp config.def.h $@
+config.def.h:
+	@echo creating config.h from $@
+	@cp $@ config.h
 
 dwm: ${OBJ}
 	@echo CC -o $@