diff --git a/tox.ini b/tox.ini
index 43f59474f..1d6be0092 100644
--- a/tox.ini
+++ b/tox.ini
@@ -20,7 +20,7 @@ deps =
        -r{toxinidir}/requirements.txt
        -r{toxinidir}/test-requirements.txt
 commands = find . -type f -name "*.pyc" -delete
-           stestr run '{posargs}'
+           stestr run {posargs}
            stestr slowest
 whitelist_externals = find
 
@@ -70,7 +70,7 @@ commands = sphinx-build -a -E -W -d releasenotes/build/doctrees -b html releasen
 
 [testenv:functional]
 basepython = python3
-commands = stestr run '{posargs}'
+commands = stestr run {posargs}
 setenv =
   {[testenv]setenv}
   OS_TEST_PATH = ./cinderclient/tests/functional