diff --git a/library/Class/WebService/SIGB/AbstractService.php b/library/Class/WebService/SIGB/AbstractService.php
index d087687b9279147ebd739d7c8370c389561a37d7..9486dae87763231ddc690f1bc4dc396640f4b40d 100644
--- a/library/Class/WebService/SIGB/AbstractService.php
+++ b/library/Class/WebService/SIGB/AbstractService.php
@@ -184,7 +184,7 @@ abstract class Class_WebService_SIGB_AbstractService {
   }
 
 
-  public function getAvailableItems() {
+  public function getAvailableItems($id) {
     return [];
   }