diff --git a/modoboa/core/tests/test_authentication.py b/modoboa/core/tests/test_authentication.py
index 29ed8e220..8ac351f0b 100644
--- a/modoboa/core/tests/test_authentication.py
+++ b/modoboa/core/tests/test_authentication.py
@@ -25,7 +25,7 @@ except ImportError:
 
 
 @override_settings(
-    DOVECOT_LOOKUP_PATH=["{}/doveadm".format(os.path.dirname(__file__))])
+    DOVEADM_LOOKUP_PATH=["{}/doveadm".format(os.path.dirname(__file__))])
 class AuthenticationTestCase(ModoTestCase):
     """Validate authentication scenarios."""