diff --git a/tox.ini b/tox.ini
index 2d31fd60..e2865f9a 100644
--- a/tox.ini
+++ b/tox.ini
@@ -21,7 +21,7 @@ passenv = http_proxy HTTP_PROXY https_proxy HTTPS_PROXY no_proxy NO_PROXY
 deps =
     -r{toxinidir}/requirements.txt
     -r{toxinidir}/test-requirements.txt
-commands = 
+commands =
     find . -type f -name "*.pyc" -delete
     nosetests mistralclient/tests/unit
 whitelist_externals = find