diff --git a/main/gradebook/exercise_jump.php b/main/gradebook/exercise_jump.php
index 26b35c22a3..dccc72b787 100755
--- a/main/gradebook/exercise_jump.php
+++ b/main/gradebook/exercise_jump.php
@@ -14,10 +14,6 @@ require_once '../inc/global.inc.php';
 api_block_anonymous_users();
 $this_section=SECTION_COURSES;
 
-$course_id = api_get_course_int_id();
-$course_info = api_get_course_info_by_id($course_id);
-$course_title = $course_info['title'];
-$course_code = $return_result['code'];
 $gradebook = Security::remove_XSS($_GET['gradebook']);
 
 $session_id = api_get_session_id();
@@ -25,16 +21,25 @@ $session_id = api_get_session_id();
 $cidReq = Security::remove_XSS($_GET['cidReq']);
 $type = Security::remove_XSS($_GET['type']);
 
-$doExerciseUrl = api_get_path(WEB_CODE_PATH).'exercice/overview.php?session_id='.$session_id.'&cidReq='.$cidReq.'&gradebook='.$gradebook.'&origin=&learnpath_id=&learnpath_item_id=&exerciseId='.intval($_GET['doexercise']);
+$doExerciseUrl = null;
+
+if (isset($_GET['doexercise'])) {
+    $doExerciseUrl = api_get_path(WEB_CODE_PATH) . 'exercise/overview.php?' . http_build_query([
+        'session_id' => $session_id,
+        'cidReq' => $cidReq,
+        'gradebook' => $gradebook,
+        'origin' => '',
+        'learnpath_id' => '',
+        'learnpath_item_id' => '',
+        'exerciseId' => intval($_GET['doexercise'])
+    ]);
+}
 
 // no support for hot potatoes
 if ($type == LINK_HOTPOTATOES) {
     $doExerciseUrl = api_get_path(WEB_CODE_PATH).'exercice/exercice.php?session_id='.$session_id.'&cidReq='.Security::remove_XSS($cidReq);
 }
 
-$_course['name'] = $course_title;
-$_course['official_code'] = $course_code;
-
 if (isset($_GET['doexercise'])) {
     header('Location: '.$doExerciseUrl);
     exit;