diff --git a/~dev_rating/application/classes/Controller/Handler/Map.php b/~dev_rating/application/classes/Controller/Handler/Map.php
index 39458af8c00aabc17af784d25a7e08b34ca8a422..0ee897227aa0627e54978ce1f0c911d4141e6951 100644
--- a/~dev_rating/application/classes/Controller/Handler/Map.php
+++ b/~dev_rating/application/classes/Controller/Handler/Map.php
@@ -172,7 +172,7 @@ class Controller_Handler_Map extends Controller_Handler
         $discipline = Model_Discipline::load($_POST['DisciplineID']);
         $map = Model_Map::of($discipline);
 
-        $failed = $map->BindStudent($this->user->TeacherID, $map['StudentID']);
+        $failed = $map->BindStudent($this->user->TeacherID, $_POST['StudentID']);
 
         $response['success'] = !$failed;
         $this->response->body(json_encode($response));