diff --git a/store/datastore/ddl/mysql/4.sql b/store/datastore/ddl/mysql/4.sql
index 18d3330e2..ea4fc4576 100644
--- a/store/datastore/ddl/mysql/4.sql
+++ b/store/datastore/ddl/mysql/4.sql
@@ -2,7 +2,7 @@
 
 ALTER TABLE jobs ADD COLUMN job_error VARCHAR(500);
 
-UPDATE jobs SET job_error = '' job_error = null;
+UPDATE jobs SET job_error = '' WHERE job_error = null;
 
 -- +migrate Down