diff --git a/tox.ini b/tox.ini
index 9a7ab006..0c0368a9 100644
--- a/tox.ini
+++ b/tox.ini
@@ -34,7 +34,7 @@ deps =
     flake8
     pytest
 commands =
-    check-manifest --ignore tox.ini,tests*
+    check-manifest --ignore 'tox.ini,tests,tests/**'
     # This repository uses a Markdown long_description, so the -r flag to
     # `setup.py check` is not needed. If your project contains a README.rst,
     # use `python setup.py check -m -r -s` instead.