diff --git a/pkg/services/sqlstore/migrations/folder_mig.go b/pkg/services/sqlstore/migrations/folder_mig.go
index 71938ed791b..4ef08d198e8 100644
--- a/pkg/services/sqlstore/migrations/folder_mig.go
+++ b/pkg/services/sqlstore/migrations/folder_mig.go
@@ -33,7 +33,7 @@ func folderv1() migrator.Table {
 			{Name: "org_id", Type: migrator.DB_BigInt, Nullable: false},
 			{Name: "title", Type: migrator.DB_NVarchar, Length: 255, Nullable: false},
 			{Name: "description", Type: migrator.DB_NVarchar, Length: 255, Nullable: true},
-			{Name: "parent_uid", Type: migrator.DB_NVarchar, Length: 40, Default: ""},
+			{Name: "parent_uid", Type: migrator.DB_NVarchar, Length: 40, Nullable: true},
 			{Name: "created", Type: migrator.DB_DateTime, Nullable: false},
 			{Name: "updated", Type: migrator.DB_DateTime, Nullable: false},
 		},