diff --git a/app/models.py b/app/models.py
index 795e059f..c1ccd039 100644
--- a/app/models.py
+++ b/app/models.py
@@ -2285,6 +2285,8 @@ class ModLog(db.Model):
         'undelete_user': _l('Restored account'),
         'ban_user': _l('Banned account'),
         'unban_user': _l('Un-banned account'),
+        'lock_post': _l('Lock post'),
+        'unlock_post': _l('Un-lock post'),
     }
 
     def action_to_str(self):