diff --git a/lib/py/Makefile.am b/lib/py/Makefile.am
index 1142b3c..a91d28c 100644
--- a/lib/py/Makefile.am
+++ b/lib/py/Makefile.am
@@ -11,7 +11,7 @@
 install-exec-hook:
 	$(PYTHON) setup.py install --root=$(DESTDIR) --prefix=$(PY_PREFIX) $(PYTHON_SETUPUTIL_ARGS)
 
-clean-generic:
-	rm -rf build
+clean-local:
+	$(RM) -r build
 
 check-local: all