diff --git a/src/applications/releeph/application/PhabricatorReleephApplication.php b/src/applications/releeph/application/PhabricatorReleephApplication.php
--- a/src/applications/releeph/application/PhabricatorReleephApplication.php
+++ b/src/applications/releeph/application/PhabricatorReleephApplication.php
@@ -18,11 +18,8 @@
     return 'releeph';
   }
 
-  public function isInstalled() {
-    if (PhabricatorEnv::getEnvConfig('releeph.installed')) {
-      return parent::isInstalled();
-    }
-    return false;
+  public function isPrototype() {
+    return true;
   }
 
   public function getRoutes() {
diff --git a/src/applications/releeph/config/PhabricatorReleephApplicationConfigOptions.php b/src/applications/releeph/config/PhabricatorReleephApplicationConfigOptions.php
--- a/src/applications/releeph/config/PhabricatorReleephApplicationConfigOptions.php
+++ b/src/applications/releeph/config/PhabricatorReleephApplicationConfigOptions.php
@@ -42,19 +42,6 @@
     $custom_field_type = 'custom:PhabricatorCustomFieldConfigOptionType';
 
     return array(
-      $this->newOption('releeph.installed', 'bool', false)
-        ->setSummary(pht('Enable the Releeph application.'))
-        ->setDescription(
-          pht(
-            'Releeph, a tool for managing release branches, will eventually '.
-            'fit in to the Phabricator suite as a general purpose tool. '.
-            'However Releeph is currently unstable in multiple ways that may '.
-            'not migrate properly for you: the code is still in alpha stage '.
-            'of design, the storage format is likely to change in unexpected '.
-            'ways, and the workflows presented are very specific to a core '.
-            'set of alpha testers at Facebook.  For the time being you are '.
-            'strongly discouraged from relying on Releeph being at all '.
-            'stable.')),
       $this->newOption('releeph.fields', $custom_field_type, $default)
         ->setCustomData('ReleephFieldSpecification'),
       $this->newOption(
diff --git a/src/infrastructure/testing/PhabricatorTestCase.php b/src/infrastructure/testing/PhabricatorTestCase.php
--- a/src/infrastructure/testing/PhabricatorTestCase.php
+++ b/src/infrastructure/testing/PhabricatorTestCase.php
@@ -116,9 +116,6 @@
       'notification.enabled',
       false);
 
-    // TODO: Remove this when we remove "releeph.installed".
-    $this->env->overrideEnvConfig('releeph.installed', true);
-
     $this->env->overrideEnvConfig(
       'phabricator.base-uri',
       'http://phabricator.example.com');