diff --git a/src/Sitemaps/SitemapRepository.php b/src/Sitemaps/SitemapRepository.php
index e42dd52..724b103 100644
--- a/src/Sitemaps/SitemapRepository.php
+++ b/src/Sitemaps/SitemapRepository.php
@@ -46,6 +46,10 @@ public function find(string $id): ?Sitemap
     {
         $method = Str::before($id, '::').'Sitemaps';
 
+        if (! method_exists($this, $method)) {
+            return null;
+        }
+
         return $this->$method()->first(fn ($sitemap) => $id === $sitemap->id());
     }