diff --git a/quickstarts/Authentication_with_OAuth.ipynb b/quickstarts/Authentication_with_OAuth.ipynb
index 61d289d11..edbbc9915 100644
--- a/quickstarts/Authentication_with_OAuth.ipynb
+++ b/quickstarts/Authentication_with_OAuth.ipynb
@@ -228,7 +228,7 @@
       "source": [
         "!gcloud auth application-default login \\\n",
         "  --no-browser --client-id-file client_secret.json \\\n",
-        "  --scopes='https://www.googleapis.com/auth/cloud-platform,https://www.googleapis.com/auth/generative-language.tuning,https://www.googleapis.com/auth/generative-language.retriever'\n"
+        "  --scopes https://www.googleapis.com/auth/cloud-platform,https://www.googleapis.com/auth/generative-language.tuning,https://www.googleapis.com/auth/generative-language.retriever\n"
       ]
     },
     {