diff --git a/tox.ini b/tox.ini
index c9d3e79..5c00715 100644
--- a/tox.ini
+++ b/tox.ini
@@ -13,7 +13,7 @@ install_command = pip install --allow-unverified=mopidy --pre {opts} {packages}
 commands =
     py.test \
         --basetemp={envtmpdir} \
-        --junit-xmlfile=xunit-{envname}.xml \
+        --junit-xml=xunit-{envname}.xml \
         --cov=mopidy_musicbox_webclient --cov-report=term-missing \
         {posargs}