diff --git a/tox.ini b/tox.ini
index 8cb63cb4..b42505f7 100644
--- a/tox.ini
+++ b/tox.ini
@@ -47,7 +47,7 @@ commands =
     sh -c "which python"
     python -V
     coverage --version
-    asyncio: coverage run --source {envsitepackagesdir}/autobahn/ {envbindir}/py.test {envsitepackagesdir}/autobahn/
+    asyncio: coverage run --source {envsitepackagesdir}/autobahn/ {envbindir}/py.test -v {envsitepackagesdir}/autobahn/
     tw121,tw132,tw154: coverage run {envbindir}/trial autobahn
     tw165,tw171,twtrunk: coverage run -m twisted.trial autobahn
     coverage report