diff --git a/sql/upgrades/152.sql b/sql/upgrades/152.sql
index f6e628ac..a6fe7eb0 100644
--- a/sql/upgrades/152.sql
+++ b/sql/upgrades/152.sql
@@ -1,11 +1,11 @@
 -- SWH DB schema upgrade
 -- from_version: 151
 -- to_version: 152
 -- description: Make content.blake2s256 not null
 
 -- latest schema version
 insert into dbversion(version, release, description)
       values(152, now(), 'Work In Progress');
 
 alter table content
-    alter column blake2s256 not null;
+    alter column blake2s256 set not null;