diff --git a/tox.ini b/tox.ini
index 53f85c1..dc8980d 100644
--- a/tox.ini
+++ b/tox.ini
@@ -11,7 +11,7 @@
 sitepackages = True
 setenv = VIRTUAL_ENV={envdir}
 commands =
-  python setup.py testr --slowest
+  python setup.py testr --slowest --testr-args='{posargs}'
 
 [testenv:full]
 sitepackages = True
@@ -38,7 +38,7 @@
 setenv = VIRTUAL_ENV={envdir}
 commands =
    python -m tools/tempest_coverage -c start --combine
-   sh tools/pretty_tox_serial.sh '(?!.*\[.*\bslow\b.*\])(^tempest\.(api|scenario|thirdparty|cli)) {posargs}'
+   sh tools/pretty_tox_serial.sh '(?!.*\[.*\bslow\b.*\])(^tempest\.(api|scenario|thirdparty|cli))'
    python -m tools/tempest_coverage -c report --html {posargs}
 
 [testenv:stress]