diff --git a/src/applications/differential/view/DifferentialRevisionDetailView.php b/src/applications/differential/view/DifferentialRevisionDetailView.php
index e0ee8f8c4e..df386a415d 100644
--- a/src/applications/differential/view/DifferentialRevisionDetailView.php
+++ b/src/applications/differential/view/DifferentialRevisionDetailView.php
@@ -67,6 +67,7 @@ final class DifferentialRevisionDetailView extends AphrontView {
 
     $next_step = null;
     if ($status == ArcanistDifferentialRevisionStatus::ACCEPTED) {
+      $command = null;
       switch ($local_vcs) {
         case PhabricatorRepositoryType::REPOSITORY_TYPE_MERCURIAL:
           $bookmark = $this->getDiff()->getBookmark();