diff --git a/Makefile b/Makefile
index e2f25cf..b4749b3 100644
--- a/Makefile
+++ b/Makefile
@@ -23,7 +23,8 @@ serve-doc: all
 .PHONY: clean
 clean:
 	rm -rf build
-	rm -f msgpack/_msgpack.cpp
+	rm -f msgpack/_cmsgpack.cpp
+	rm -f msgpack/_cmsgpack.*.so
 	rm -rf msgpack/__pycache__
 	rm -rf test/__pycache__