diff --git a/app/controllers/admission/userlist.php b/app/controllers/admission/userlist.php
index 00900e2f1748722394ef1ac5d08490344038b1f6..f2cda5797c13e5c84308b9d702914cc968846f3d 100644
--- a/app/controllers/admission/userlist.php
+++ b/app/controllers/admission/userlist.php
@@ -104,7 +104,7 @@ class Admission_UserListController extends AuthenticatedController
         CSRFProtection::verifyUnsafeRequest();
         $userlist = new AdmissionUserList($userlistId);
         $userlist->setName(Request::get('name'))
-            ->setFactor(Request::float('factor'))
+            ->setFactor(Request::float('factor', 0))
             ->setUsers(Request::getArray('users'))
             ->setOwnerId($GLOBALS['user']->id);
         if ($userlist->store()) {