diff --git a/pkg/services/sqlstore/migrations/dashboard_version_mig.go b/pkg/services/sqlstore/migrations/dashboard_version_mig.go
index fee69b9ef4c..063514c5816 100644
--- a/pkg/services/sqlstore/migrations/dashboard_version_mig.go
+++ b/pkg/services/sqlstore/migrations/dashboard_version_mig.go
@@ -50,7 +50,7 @@ SELECT
 	dashboard.version,
 	dashboard.version,
 	dashboard.updated,
-	dashboard.updated_by,
+	COALESCE(dashboard.updated_by, -1),
 	'',
 	dashboard.data
 FROM dashboard;`