diff --git a/src/applications/repository/storage/PhabricatorRepositoryURI.php b/src/applications/repository/storage/PhabricatorRepositoryURI.php
--- a/src/applications/repository/storage/PhabricatorRepositoryURI.php
+++ b/src/applications/repository/storage/PhabricatorRepositoryURI.php
@@ -752,7 +752,7 @@
     // without requiring an index rebuild.
 
     $ssh_host = PhabricatorEnv::getEnvConfig('diffusion.ssh-host');
-    if (strlen($ssh_host)) {
+    if (phutil_nonempty_string($ssh_host)) {
       $domain_map['<ssh-host>'] = $ssh_host;
     }