diff --git a/src/applications/maniphest/controller/ManiphestReportController.php b/src/applications/maniphest/controller/ManiphestReportController.php
--- a/src/applications/maniphest/controller/ManiphestReportController.php
+++ b/src/applications/maniphest/controller/ManiphestReportController.php
@@ -700,13 +700,23 @@
       ),
       pht('Oldest (All)'));
     $cclass[] = 'n';
+    $low_pris = array();
+    $low_pri_map = ManiphestTaskPriority::getTaskPriorityMap();
+    foreach ($low_pri_map as $pri => $full_label) {
+      // TODO: This is sort of a hard-code for the default "normal" status.
+      // When reports are more powerful, this should be made more general.
+      if ($pri < 50) {
+        $low_pris[] = $full_label;
+      }
+    }
+    $pri_string = implode(' or ', $low_pris);
     $cname[] = javelin_tag(
       'span',
       array(
         'sigil' => 'has-tooltip',
         'meta'  => array(
           'tip' => pht(
-            'Oldest open task, excluding those with Low or Wishlist priority.'),
+            'Oldest open task, excluding those with %s priority.', $pri_string),
           'size' => 200,
         ),
       ),