diff --git a/Makefile b/Makefile
index a748bdd..264178c 100644
--- a/Makefile
+++ b/Makefile
@@ -1,2 +1,2 @@
 tests:
-	pytest test_maya.py test_maya_interval.py
+	pytest tests/
diff --git a/tests/__init__.py b/tests/__init__.py
new file mode 100644
index 0000000..e69de29