diff --git a/src/applications/maniphest/query/ManiphestTaskQuery.php b/src/applications/maniphest/query/ManiphestTaskQuery.php
--- a/src/applications/maniphest/query/ManiphestTaskQuery.php
+++ b/src/applications/maniphest/query/ManiphestTaskQuery.php
@@ -588,21 +588,21 @@
     if ($this->blockingTasks === true) {
       $parts[] = qsprintf(
         $conn,
-        'blocking.dst IS NOT NULL');
+        'blockingtask.status IS NOT NULL');
     } else if ($this->blockingTasks === false) {
       $parts[] = qsprintf(
         $conn,
-        'blocking.dst IS NULL');
+        'blockingtask.status IS NULL');
     }
 
     if ($this->blockedTasks === true) {
       $parts[] = qsprintf(
         $conn,
-        'blocked.dst IS NOT NULL');
+        'blockedtask.status IS NOT NULL');
     } else if ($this->blockedTasks === false) {
       $parts[] = qsprintf(
         $conn,
-        'blocked.dst IS NULL');
+        'blockedtask.status IS NULL');
     }
 
     return '('.implode(') OR (', $parts).')';