diff --git a/tox.ini b/tox.ini
index dd5ed0d1..adccb1b9 100644
--- a/tox.ini
+++ b/tox.ini
@@ -22,6 +22,7 @@ deps =
     cov41: coverage>=4.1,<5.0
     cov5: coverage>=5.0,<6.0
 commands =
+    rm .coverage
     coverage run --branch --source=coveralls -m pytest tests/
     coverage report -m