diff --git a/tox.ini b/tox.ini
index 80bc49e88..9ced0d629 100644
--- a/tox.ini
+++ b/tox.ini
@@ -67,6 +67,8 @@ commands =
          coverage xml
 
 [testenv:codechecks]
+whitelist_externals =
+         /bin/mv
 commands =
          pyflakes src static misc setup.py
          python misc/coding_tools/check-umids.py src