diff --git a/src/applications/search/engine/PhabricatorElasticSearchEngine.php b/src/applications/search/engine/PhabricatorElasticSearchEngine.php
--- a/src/applications/search/engine/PhabricatorElasticSearchEngine.php
+++ b/src/applications/search/engine/PhabricatorElasticSearchEngine.php
@@ -15,7 +15,10 @@
   }
 
   public function isEnabled() {
-    return (bool)PhabricatorEnv::getEnvConfig('search.elastic.host');
+    $this->uri = PhabricatorEnv::getEnvConfig('search.elastic.host');
+    $this->index = PhabricatorEnv::getEnvConfig('search.elastic.namespace');
+
+    return (bool)$this->uri;
   }
 
   public function setURI($uri) {