diff --git a/pkg/backup/client.go b/pkg/backup/client.go
index 5bf6b4d2a..a4dae42bd 100644
--- a/pkg/backup/client.go
+++ b/pkg/backup/client.go
@@ -930,32 +930,3 @@ func CollectChecksums(backupMeta *kvproto.BackupMeta) ([]Checksum, error) {
 
 	return checksums, nil
 }
-
-// FilterSchema filter in-place schemas that doesn't have backup files
-// this is useful during incremental backup, no files in backup means no files to restore
-// so we can skip some DDL in restore to speed up restoration.
-func FilterSchema(backupMeta *kvproto.BackupMeta) error {
-	dbs, err := utils.LoadBackupTables(backupMeta)
-	if err != nil {
-		return err
-	}
-	schemas := make([]*kvproto.Schema, 0, len(backupMeta.Schemas))
-	for _, schema := range backupMeta.Schemas {
-		dbInfo := &model.DBInfo{}
-		err := json.Unmarshal(schema.Db, dbInfo)
-		if err != nil {
-			return err
-		}
-		tblInfo := &model.TableInfo{}
-		err = json.Unmarshal(schema.Table, tblInfo)
-		if err != nil {
-			return err
-		}
-		tbl := dbs[dbInfo.Name.String()].GetTable(tblInfo.Name.String())
-		if len(tbl.Files) > 0 {
-			schemas = append(schemas, schema)
-		}
-	}
-	backupMeta.Schemas = schemas
-	return nil
-}
diff --git a/pkg/task/backup.go b/pkg/task/backup.go
index 7083c229a..49449b558 100644
--- a/pkg/task/backup.go
+++ b/pkg/task/backup.go
@@ -323,10 +323,6 @@ func RunBackup(c context.Context, g glue.Glue, cmdName string, cfg *BackupConfig
 		if isIncrementalBackup {
 			// Since we don't support checksum for incremental data, fast checksum should be skipped.
 			log.Info("Skip fast checksum in incremental backup")
-			err = backup.FilterSchema(&backupMeta)
-			if err != nil {
-				return err
-			}
 		} else {
 			// When user specified not to calculate checksum, don't calculate checksum.
 			log.Info("Skip fast checksum because user requirement.")
diff --git a/tests/br_incremental_index/run.sh b/tests/br_incremental_index/run.sh
index f4b4b9de7..9955bf679 100755
--- a/tests/br_incremental_index/run.sh
+++ b/tests/br_incremental_index/run.sh
@@ -31,7 +31,7 @@ done
 
 # full backup
 echo "backup full start..."
-run_sql "CREATE INDEX idx_c1 ON ${DB}.${TABLE}(c1)" &
+run_sql "CREATE INDEX idx_c1 ON ${DB}.${TABLE}(c1)"
 run_br --pd $PD_ADDR backup full -s "local://$TEST_DIR/$DB/full" --ratelimit 5 --concurrency 4
 wait
 # run ddls