diff --git a/appveyor.yml b/appveyor.yml
index a5b3768..5db1a9f 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -6,4 +6,4 @@ install:
 - pip install .[test]
 
 test_script:
-- python -m tox
+- tox