diff --git a/src/SleepingOwl/WithJoin/WithJoinEloquentBuilder.php b/src/SleepingOwl/WithJoin/WithJoinEloquentBuilder.php
index 15728ed..4a406e8 100644
--- a/src/SleepingOwl/WithJoin/WithJoinEloquentBuilder.php
+++ b/src/SleepingOwl/WithJoin/WithJoinEloquentBuilder.php
@@ -89,7 +89,7 @@ protected function addJoinToQuery($joinTableAlias, $currentTableAlias, Relation
 		]);
 		$joinLeftCondition = implode('.', [
 			$joinTableAlias,
-			$relation->getOtherKey()
+			$relation->getOwnerKey()
 		]);
 		$joinRightCondition = implode('.', [
 			$currentTableAlias,