diff --git a/specification/redis/resource-manager/Microsoft.Cache/stable/2022-05-01/redis.json b/specification/redis/resource-manager/Microsoft.Cache/stable/2022-05-01/redis.json
index 642bceb34615..ebc58196c280 100644
--- a/specification/redis/resource-manager/Microsoft.Cache/stable/2022-05-01/redis.json
+++ b/specification/redis/resource-manager/Microsoft.Cache/stable/2022-05-01/redis.json
@@ -1898,7 +1898,7 @@
             },
             "rdb-backup-frequency": {
               "type": "string",
-              "description": "Specifies the frequency for creating rdb backup"
+              "description": "Specifies the frequency for creating rdb backup in minutes. Valid values: (15, 30, 60, 360, 720, 1440)"
             },
             "rdb-backup-max-snapshot-count": {
               "type": "string",