diff --git a/specification/storage/data-plane/Microsoft.FileStorage/stable/2025-01-05/file.json b/specification/storage/data-plane/Microsoft.FileStorage/stable/2025-01-05/file.json
index 2cf5fadf788e..ff3d343fc610 100644
--- a/specification/storage/data-plane/Microsoft.FileStorage/stable/2025-01-05/file.json
+++ b/specification/storage/data-plane/Microsoft.FileStorage/stable/2025-01-05/file.json
@@ -5207,6 +5207,9 @@
           {
             "$ref": "#/parameters/FilePermission"
           },
+          {
+            "$ref": "#/parameters/FilePermissionFormat"
+          },
           {
             "$ref": "#/parameters/FilePermissionKey"
           },