diff --git a/tox.ini b/tox.ini
index f7f704bf25..f0721d6e21 100644
--- a/tox.ini
+++ b/tox.ini
@@ -18,7 +18,7 @@ setenv =
 basepython = python3
 deps = -r{toxinidir}/test-requirements.txt
 commands =
-    stestr run '{posargs}'
+    stestr run {posargs}
     coverage combine
     coverage html -d cover
     coverage xml -o cover/coverage.xml