diff --git a/src/applications/feed/config/PhabricatorFeedConfigOptions.php b/src/applications/feed/config/PhabricatorFeedConfigOptions.php
--- a/src/applications/feed/config/PhabricatorFeedConfigOptions.php
+++ b/src/applications/feed/config/PhabricatorFeedConfigOptions.php
@@ -14,6 +14,7 @@
   public function getOptions() {
     return array(
       $this->newOption('feed.public', 'bool', false)
+        ->setLocked(true)
         ->setBoolOptions(
           array(
             pht('Allow anyone to view the feed'),
@@ -30,6 +31,7 @@
             "NOTE: You must also set `policy.allow-public` to true for this ".
             "setting to work properly.")),
       $this->newOption('feed.http-hooks', 'list<string>', array())
+        ->setLocked(true)
         ->setSummary(pht('POST notifications of feed events.'))
         ->setDescription(
           pht(