diff --git a/src/applications/config/check/PhabricatorWebServerSetupCheck.php b/src/applications/config/check/PhabricatorWebServerSetupCheck.php
--- a/src/applications/config/check/PhabricatorWebServerSetupCheck.php
+++ b/src/applications/config/check/PhabricatorWebServerSetupCheck.php
@@ -23,7 +23,7 @@
     }
 
     $base_uri = PhabricatorEnv::getEnvConfig('phabricator.base-uri');
-    if (!strlen($base_uri)) {
+    if (!$base_uri) {
       // If `phabricator.base-uri` is not set then we can't really do
       // anything.
       return;