diff --git a/charts/tidb-backup/templates/scripts/_start_restore.sh.tpl b/charts/tidb-backup/templates/scripts/_start_restore.sh.tpl
index 9e9e98d9495..db0d7fd511a 100644
--- a/charts/tidb-backup/templates/scripts/_start_restore.sh.tpl
+++ b/charts/tidb-backup/templates/scripts/_start_restore.sh.tpl
@@ -3,7 +3,7 @@ set -euo pipefail
 dirname=restore-`date +%Y-%m-%dT%H%M%S`-${MY_POD_NAME}
 dataDir=/data/${dirname}
 mkdir -p ${dataDir}/
-host=`echo {{ .Values.clusterName }}_TIDB_SERVICE_HOST | tr '[a-z]' '[A-Z]'` | tr '-' '_'`
+host=`echo {{ .Values.clusterName }}_TIDB_SERVICE_HOST | tr '[a-z]' '[A-Z]' | tr '-' '_'`
 
 {{- if .Values.restore.gcp }}
 downloader \