diff --git a/src/Repository/Blog/PostRepositoryQuery.php b/src/Repository/Blog/PostRepositoryQuery.php
index 6b3e04e..157932f 100644
--- a/src/Repository/Blog/PostRepositoryQuery.php
+++ b/src/Repository/Blog/PostRepositoryQuery.php
@@ -59,9 +59,7 @@ class PostRepositoryQuery extends RepositoryQuery
         $keywords = explode(' ', $keywords);
 
         $filterWords = fn ($keyword) => '' !== trim($keyword) && preg_match('/[a-zA-Z]+/', $keyword);
-        $filter = fn ($keyword) => '' !== trim($keyword) && preg_match('/[a-zA-Z]+/', $keyword);
-
-        $keywords = array_filter($keywords, $filter);
+        $keywords = array_filter($keywords, $filterWords);
 
         if ($keywords) {
             $conn = $this->repository->getEm()->getConnection();