Maybe now?

tleonhardt · tleonhardt · commit b3d0aac80e59 · 2019-05-13T23:08:35.000-04:00
diff --git a/.appveyor.yml b/.appveyor.yml
@@ -22,4 +22,4 @@ install:
 - "%PYTHON%/Scripts/pip install -U --user setuptools tox wheel"
 
 test_script:
-- "%PYTHON%/python -m tox -e %TOX_ENV%"
+- "%PYTHON%/python -m tox -e %TOXENV%"
