diff --git a/src/Relations/Joiner.php b/src/Relations/Joiner.php
index 4a7b0fe..ab64799 100644
--- a/src/Relations/Joiner.php
+++ b/src/Relations/Joiner.php
@@ -204,7 +204,7 @@ protected function getJoinKeys(Relation $relation)
         if ($relation instanceof HasManyThrough) {
             $fk = $relation->getQualifiedFarKeyName();
 
-            return [$fk, $relation->getParent()->getQualifiedKeyName()];
+            return [$fk, $relation->getQualifiedParentKeyName()];
         }
     }
 }