diff --git a/src/applications/maniphest/query/ManiphestTaskSearchEngine.php b/src/applications/maniphest/query/ManiphestTaskSearchEngine.php
--- a/src/applications/maniphest/query/ManiphestTaskSearchEngine.php
+++ b/src/applications/maniphest/query/ManiphestTaskSearchEngine.php
@@ -236,8 +236,6 @@
     $group = idx($this->getGroupValues(), $group);
     if ($group) {
       $query->setGroupBy($group);
-    } else {
-      $query->setGroupBy(head($this->getGroupValues()));
     }
 
     if ($map['ids']) {