diff --git a/templates/swagger/v1_json.tmpl b/templates/swagger/v1_json.tmpl
index 570747ca57..a1ecc7fb4f 100644
--- a/templates/swagger/v1_json.tmpl
+++ b/templates/swagger/v1_json.tmpl
@@ -23780,7 +23780,7 @@
           "x-go-name": "Name"
         },
         "object_format_name": {
-          "description": "ObjectFormatName of the underlying git repository",
+          "description": "ObjectFormatName of the underlying git repository, empty string for default (sha1)",
           "type": "string",
           "enum": [
             "sha1",