diff --git a/compcards.php b/compcards.php
index c79f293..c3b1b4e 100644
--- a/compcards.php
+++ b/compcards.php
@@ -18,7 +18,8 @@ $conn = db_connect();
 // (statt der Kategorie-Sektionen).
 // ─────────────────────────────────────────────
 $searchTerm = isset($_GET['search']) ? trim((string)$_GET['search']) : '';
-if ($searchTerm !== '' && mb_strlen($searchTerm, 'UTF-8') >= 2) {
+$searchLen = function_exists('mb_strlen') ? mb_strlen($searchTerm, 'UTF-8') : strlen($searchTerm);
+if ($searchTerm !== '' && $searchLen >= 2) {
     $like = addcslashes($searchTerm, "%_\\");
     $like = '%' . $like . '%';