diff --git a/Makefile b/Makefile
index 7af1a79..caf98a3 100644
--- a/Makefile
+++ b/Makefile
@@ -75,7 +75,7 @@ assets-clean:
 # Run unit tests
 test: test/assets calamari_models
 	# declare -p HTTP_PROXY
-	$(PYTHON) -m pytest --continue-on-collection-errors test $(PYTEST_ARGS)
+	python3 -m pytest --continue-on-collection-errors test $(PYTEST_ARGS)
 
 # Run unit tests and determine test coverage
 coverage: test/assets calamari_models