diff --git a/Makefile b/Makefile
index a0884806e..1bcfe2088 100644
--- a/Makefile
+++ b/Makefile
@@ -346,6 +346,7 @@ ifeq ($(IS_FACEBOOK_TREE),yes)
 	$(MAKE) -C facebook clean
 endif
 	$(MAKE) -C $(DEPENDENCIES_DIR)/ocamldot clean
+	find infer/tests -name '*.o' -or -name '*.o.sh' -delete
 
 conf-clean: clean
 	$(REMOVE) infer/lib/python/inferlib/*.pyc