diff --git a/app/api/views/alias.py b/app/api/views/alias.py
index 111d93c4..db269e55 100644
--- a/app/api/views/alias.py
+++ b/app/api/views/alias.py
@@ -240,7 +240,7 @@ def update_alias(alias_id):
     user = g.user
     alias: Alias = Alias.get(alias_id)
 
-    if alias.user_id != user.id:
+    if not alias or alias.user_id != user.id:
         return jsonify(error="Forbidden"), 403
 
     changed = False