diff --git a/Makefile b/Makefile
index c50c15fa..bd4e7a25 100644
--- a/Makefile
+++ b/Makefile
@@ -6,7 +6,7 @@ all:
 	$(PYTHON) setup.py build_ext --inplace
 
 clean:
-	find . -name "*.so" -o -name "*.pyc" -o -name "*.pyx.md5" -o -name "*.pyd" | xargs rm -f
+	find . -name "*.so" -o -name "*.pyc" -o -name "*.md5" -o -name "*.pyd" | xargs rm -f
 	find . -name "*.pyx" -exec ./tools/rm_pyx_c_file.sh {} \;
 
 test: