diff --git a/endpoints/api/trigger.py b/endpoints/api/trigger.py
index 6cefadc13..79c3cced9 100644
--- a/endpoints/api/trigger.py
+++ b/endpoints/api/trigger.py
@@ -30,7 +30,7 @@ logger = logging.getLogger(__name__)
 
 
 def _prepare_webhook_url(scheme, username, password, hostname, path):
-  auth_hostname = '%s:%s@%s' % (quote(username), quote(password), hostname)
+  auth_hostname = '%s:%s@%s' % (username, password, hostname)
   return urlunparse((scheme, auth_hostname, path, '', '', ''))