diff --git a/src/Service/AnkiService.php b/src/Service/AnkiService.php
index 5dbcf0c..310d827 100644
--- a/src/Service/AnkiService.php
+++ b/src/Service/AnkiService.php
@@ -99,7 +99,7 @@ class AnkiService
      * @param class-string<T> $class
      * @return list<T>
      */
-    public function getAllFromClass(string $class, ?bool $isSuspended): array
+    public function getAllFromClass(string $class, ?bool $isSuspended = null): array
     {
         $ids = $this->getAllIdsFromClass($class, $isSuspended);
         return $this->getNotes($ids);