diff --git a/mgdsoft/stackdriver-bundle/0.1/config/packages/prod/mgdsoft_stackdriver.yaml b/mgdsoft/stackdriver-bundle/0.1/config/packages/prod/mgdsoft_stackdriver.yaml
index cf0075f2..0d951a4d 100644
--- a/mgdsoft/stackdriver-bundle/0.1/config/packages/prod/mgdsoft_stackdriver.yaml
+++ b/mgdsoft/stackdriver-bundle/0.1/config/packages/prod/mgdsoft_stackdriver.yaml
@@ -1,4 +1,4 @@
 mgdsoft_stackdriver:
     # to test in local
-    # credentials_json_file: "google_acount_service.json'"
+    # credentials_json_file: ~
     level: info