diff --git a/Makefile b/Makefile
index 054e3ae..ffac8f0 100644
--- a/Makefile
+++ b/Makefile
@@ -132,7 +132,7 @@ config.h: config.h.dist
 	@echo "Please review config.h, as config.h.dist is more recent."
 	@false
 
-%.o: %.c config.h
+%.o: %.c config.h Makefile
 	@echo "  CC        $@"
 	@$(CC) -c $(CFLAGS) -Wa,-adhlns=$(<:.c=.al) -o $@ $(subst .o,.c,$@)