diff --git a/src/EloquentJoinBuilder.php b/src/EloquentJoinBuilder.php
index 8935be6..aa84f37 100644
--- a/src/EloquentJoinBuilder.php
+++ b/src/EloquentJoinBuilder.php
@@ -190,9 +190,9 @@ private function performJoin($relations, $leftJoin = null)
             if (!in_array($relationAccumulatedString, $this->joinedTables)) {
                 $joinQuery = $relatedTable.($this->useTableAlias ? ' as '.$relatedTableAlias : '');
                 if ($relatedRelation instanceof BelongsToJoin) {
-                    $relatedKey = $relatedRelation->getQualifiedForeignKeyName();
+                    $relatedKey = ((float) \App::version() < 5.8) ? $relatedRelation->getQualifiedForeignKey() : $relatedRelation->getQualifiedForeignKeyName();
                     $relatedKey = last(explode('.', $relatedKey));
-                    $ownerKey = $relatedRelation->getOwnerKeyName();
+                    $ownerKey = ((float) \App::version() < 5.8) ? $relatedRelation->getOwnerKey() : $relatedRelation->getOwnerKeyName();
 
                     $this->$joinMethod($joinQuery, function ($join) use ($relatedRelation, $relatedTableAlias, $relatedKey, $currentTableAlias, $ownerKey) {
                         $join->on($relatedTableAlias.'.'.$ownerKey, '=', $currentTableAlias.'.'.$relatedKey);