diff --git a/database/2023_08_30_213930_new_permissions_system.php b/database/2023_08_30_213930_new_permissions_system.php
index 6697632..3cff692 100644
--- a/database/2023_08_30_213930_new_permissions_system.php
+++ b/database/2023_08_30_213930_new_permissions_system.php
@@ -41,9 +41,7 @@ final class NewPermissionsSystem_20230830_213930 implements IDbMigration {
         $conn->execute('
             ALTER TABLE msz_perms
             ADD CONSTRAINT perms_53bit
-                CHECK (perms_allow >= 0 AND perms_deny >= 0 AND perms_allow <= 9007199254740991 AND perms_deny <= 9007199254740991),
-            ADD CONSTRAINT perms_only_user_or_role
-                CHECK ((user_id IS NULL AND role_id IS NULL) OR (user_id IS NULL AND role_id IS NOT NULL) OR (user_id IS NOT NULL AND role_id IS NULL))
+                CHECK (perms_allow >= 0 AND perms_deny >= 0 AND perms_allow <= 9007199254740991 AND perms_deny <= 9007199254740991)
         ');
 
         $conn->execute('