diff --git a/Makefile b/Makefile
index 11f1fc7..12c0eec 100644
--- a/Makefile
+++ b/Makefile
@@ -10,9 +10,8 @@ Makefile.csm:
 	$(CSM) -makefile Makefile.csm
 
 .PHONY: clean
-clean: Makefile.csm
-	$(MAKE) -f Makefile.csm clean
-	rm -f Makefile.csm rain
+clean:
+	git clean -fdx
 
 .PHONY: install
 install: