diff --git a/tox.ini b/tox.ini
index acacf755..cedc4c0a 100644
--- a/tox.ini
+++ b/tox.ini
@@ -14,4 +14,6 @@ deps =
     pytest-cov
     {[testenv]deps}
 commands =
-    py.test --cov jedi []
+    coverage run --source jedi -m py.test
+    coverage report
+    coverage erase