diff --git a/main/exercise/exercise_submit.php b/main/exercise/exercise_submit.php
index 59a21e2e0a..d1225fdab3 100755
--- a/main/exercise/exercise_submit.php
+++ b/main/exercise/exercise_submit.php
@@ -987,7 +987,7 @@ if (!empty($error)) {
                 previous_question_and_save(previousId, questionId);
             });
 
-            $(\'button[name="save_question_list"\').on(\'click\', function (e) {
+            $(\'button[name="save_question_list"]\').on(\'click\', function (e) {
                 e.preventDefault();
                 e.stopPropagation();