diff --git a/include/category_card.inc.php b/include/category_card.inc.php
index 4e1b993c6..ce26bc148 100644
--- a/include/category_card.inc.php
+++ b/include/category_card.inc.php
@@ -34,7 +34,7 @@ global $http;
 
 $str_dossier=Dossier::get();
 
-$root="?".http_build_query(["ac"=>$http->request("ac"),"sb"=>"detail","f_id"=>$http->request("f_id")]);
+$root="?".http_build_query(["ac"=>$http->request("ac"),"sb"=>"detail","f_id"=>$http->request("f_id","number")]);
 $root.="&".$str_dossier;
 
 $ss_action=$http->request("sc", "string", "dc");