diff --git a/Makefile b/Makefile
index 4d1db9708ec0d41af620f3cdf5e2e9b3bf5bae36..4112ba3d81b68f7b0be24118c6cda928edceb90e 100644
--- a/Makefile
+++ b/Makefile
@@ -6,8 +6,8 @@ docs:
 
 # run tests
 tests:
-	python -m unittest ${test_filter}
+	python3 -m unittest
 
 # check static typing
 check:
-	mypy duniterpy --ignore-missing-imports
+	python3 -m mypy duniterpy --ignore-missing-imports