diff --git a/endpoints/key_server.py b/endpoints/key_server.py
index c5522d0da..de029c489 100644
--- a/endpoints/key_server.py
+++ b/endpoints/key_server.py
@@ -96,7 +96,7 @@ def get_service_key(service, kid):
 
 
 @key_server.route('/services/<service>/keys/<kid>', methods=['PUT'])
-def put_service_keys(service, kid):
+def put_service_key(service, kid):
   metadata = {'ip': request.remote_addr}
 
   expiration_date = request.args.get('expiration', None)