diff --git a/user.py b/user.py
index 6df81caf87..6a26ae0d43 100644
--- a/user.py
+++ b/user.py
@@ -322,6 +322,7 @@ class User(ModelSQL, ModelView):
 class UserAuthenticateAttempt(LoginAttempt):
     'Web User Authenticate Attempt'
     __name__ = 'web.user.authenticate.attempt'
+    _table = None  # Needed to reset LoginAttempt._table
 
 
 class UserSession(ModelSQL):