diff --git a/utils/ad_search.py b/utils/ad_search.py
index 4b1e973..ad8e148 100644
--- a/utils/ad_search.py
+++ b/utils/ad_search.py
@@ -49,7 +49,7 @@ def search_by_user_id(user_id: str, attributes: list[str] | None = None) -> list
         "(userPrincipalName={})".format(short_username + "@sibcem.ru"),
         "(sAMAccountName={})".format(safe_sam),
     ]
-    or_filter = "({})".format("".join(or_parts))
+    or_filter = "(|{})".format("".join(or_parts))
     search_filter = "(&{}{})".format("(objectClass=user)", or_filter)
 
     conn = _get_conn()