diff --git a/src/Franzose/ClosureTable/Models/Entity.php b/src/Franzose/ClosureTable/Models/Entity.php
index 7e854c9..110836c 100644
--- a/src/Franzose/ClosureTable/Models/Entity.php
+++ b/src/Franzose/ClosureTable/Models/Entity.php
@@ -1430,7 +1430,7 @@ public function deleteSubtree($withSelf = false, $forceDelete = false)
     {
         $action = ($forceDelete === true ? 'forceDelete' : 'delete');
 
-        $ids = $this->joinClosureBy('descendant', $withSelf)->pluck($this->getKeyName());
+        $ids = $this->joinClosureBy('descendant', $withSelf)->pluck($this->getQualifiedKeyName());
 
         if ($forceDelete) {
             $this->closure->whereIn($this->closure->getDescendantColumn(), $ids)->delete();