diff --git a/endpoints/key_server.py b/endpoints/key_server.py
index cc4873a60..6ea3839c9 100644
--- a/endpoints/key_server.py
+++ b/endpoints/key_server.py
@@ -90,7 +90,6 @@ def get_service_key(service, kid):
 
   resp = jsonify(key.jwk)
 
-  # Set the cache header to be a year for non-expiring keys.
   lifetime = timedelta(days=365)
   if key.expiration_date is not None:
     lifetime = key.expiration_date - key.created_date