diff --git a/tox.ini b/tox.ini
index 4c2f9914..03b82ada 100644
--- a/tox.ini
+++ b/tox.ini
@@ -62,7 +62,7 @@ commands =
     bash -c 'cd ../../ && ./setup.py develop'
     pytest --no-cov-on-fail --cov=kiwi \
         --cov-report=term-missing \
-        --cov-fail-under=100 --cov-config .coveragerc
+        --cov-fail-under=100 --cov-config .coveragerc {posargs}
 
 
 # Unit Test run with basepython set to 3.4