diff --git a/db/sql/migrations/v2.8.39.sql b/db/sql/migrations/v2.8.39.sql
index 64e2fa63..679ee57b 100644
--- a/db/sql/migrations/v2.8.39.sql
+++ b/db/sql/migrations/v2.8.39.sql
@@ -5,7 +5,7 @@ alter table `task`
 
 
 create table `project__template_backup_385025846` (
-    id int,
+    id int primary key,
     removed boolean default false
 );