diff --git a/tox.ini b/tox.ini
index 758e3f23c2..286d2f041b 100644
--- a/tox.ini
+++ b/tox.ini
@@ -54,4 +54,4 @@ deps =
     -r{toxinidir}/requirements/docs.txt
 
 commands =
-    sphinx-build -b html docs docs/build/html -W
+    sphinx-build --fail-on-warning --quiet --builder html docs docs/build/html