diff --git a/db/sql/migrations/v2.9.62.sql b/db/sql/migrations/v2.9.62.sql
index db41a716..57490645 100644
--- a/db/sql/migrations/v2.9.62.sql
+++ b/db/sql/migrations/v2.9.62.sql
@@ -2,7 +2,7 @@ alter table project add `type` varchar(20) default '';
 
 alter table task add `inventory_id` int null references project__inventory(`id`) on delete set null;
 
-alter table project__inventory add `holder_id` int null references project__template(`id`) on delete cascade;
+alter table project__inventory add `holder_id` int null references project__template(`id`) on delete set null;
 
 create table `option` (
     `key` varchar(255) primary key not null,