diff --git a/tox.ini b/tox.ini
index a1c7f9d..430fdfb 100644
--- a/tox.ini
+++ b/tox.ini
@@ -8,7 +8,7 @@ usedevelop =
   nocoverage: False
 setenv =
   DJANGO_SETTINGS_MODULE=combo.settings
-  PASSERELLE_SETTINGS_FILE=tests/settings.py
+  COMBO_SETTINGS_FILE=tests/settings.py
   DB_ENGINE=django.db.backends.postgresql_psycopg2
   SETUPTOOLS_USE_DISTUTILS=stdlib
   coverage: COVERAGE=--cov-report xml --cov-report html --cov=combo_plugin_gnm/