diff --git a/Makefile b/Makefile
index 10d299729ffb3c400f7bd92e6a2793cc5c03228b..f06e95ba6dec7d66d7c65d1cde24b4230fff757c 100644
--- a/Makefile
+++ b/Makefile
@@ -36,8 +36,9 @@ format:
 	black tests
 	black examples
 
-# build a whell package in dist folder
+# build a wheel package in dist folder
 build:
+	rm -r build/* dist/*
 	python setup.py sdist bdist_wheel
 
 # upload on PyPi repository