diff --git a/src/applications/spaces/xaction/PhabricatorSpacesNamespaceNameTransaction.php b/src/applications/spaces/xaction/PhabricatorSpacesNamespaceNameTransaction.php
--- a/src/applications/spaces/xaction/PhabricatorSpacesNamespaceNameTransaction.php
+++ b/src/applications/spaces/xaction/PhabricatorSpacesNamespaceNameTransaction.php
@@ -15,7 +15,7 @@
 
   public function getTitle() {
     $old = $this->getOldValue();
-    if (!strlen($old)) {
+    if (!phutil_nonempty_string($old)) {
       return pht(
         '%s created this space.',
         $this->renderAuthor());