diff --git a/br/backup-and-restore-storages.md b/br/backup-and-restore-storages.md
index 1a4e2d6adc4e4..891769137e6e6 100644
--- a/br/backup-and-restore-storages.md
+++ b/br/backup-and-restore-storages.md
@@ -32,7 +32,7 @@ BACKUP DATABASE * TO 's3://bucket-name/prefix' SEND_CREDENTIALS_TO_TIKV = FALSE;
 
 ### URI format description
 
-The URI format of the storage service is as follows:
+The URI format of the external storage service is as follows:
 
 ```shell
 [scheme]://[host]/[path]?[parameters]