diff --git a/src/Engines/TypesenseSearchEngine.php b/src/Engines/TypesenseSearchEngine.php
index ebd2637..8ce0c83 100644
--- a/src/Engines/TypesenseSearchEngine.php
+++ b/src/Engines/TypesenseSearchEngine.php
@@ -132,17 +132,17 @@ public function paginate(Builder $builder, $perPage, $page): mixed
     /**
      * @param \Laravel\Scout\Builder $builder
      * @param int                    $page
-     * @param int                    $perPage
+     * @param int|null               $perPage
      *
      * @return array
      */
-    private function buildSearchParams(Builder $builder, int $page, int $perPage): array
+    private function buildSearchParams(Builder $builder, int $page, ?int $perPage): array
     {
         $params = [
             'q'                   => $builder->query,
             'query_by'            => implode(',', $builder->model->typesenseQueryBy()),
             'filter_by'           => $this->filters($builder),
-            'per_page'            => $perPage,
+            'per_page'            => $perPage ?? 10,
             'page'                => $page,
             'highlight_start_tag' => $this->startTag,
             'highlight_end_tag'   => $this->endTag,
@@ -223,7 +223,7 @@ protected function performSearch(Builder $builder, array $options = []): mixed
         $documents = $this->typesense->getCollectionIndex($builder->model)
                                      ->getDocuments();
         if ($builder->callback) {
-            return call_user_func($builder->callback, $documents, $builder->query, $options);
+            return call_user_func($builder->callback, $builder, $documents, $builder->query, $options);
         }
 
         return $documents->search($options);