diff --git a/tox.ini b/tox.ini
index dc19d816f..cc992033b 100644
--- a/tox.ini
+++ b/tox.ini
@@ -43,8 +43,8 @@ commands =
 [testenv:docs]
 deps =
     sphinx
-	oslosphinx
-	reno
+    oslosphinx
+    reno
 commands = python setup.py build_sphinx
 
 [flake8]