diff --git a/sbas/templates/sbas/exam_take.html b/sbas/templates/sbas/exam_take.html
index 9e287646..0ccef8f9 100755
--- a/sbas/templates/sbas/exam_take.html
+++ b/sbas/templates/sbas/exam_take.html
@@ -36,6 +36,8 @@ CID: {{cid}}
             $(el).click((e) => {
                 console.log(1, el.dataset.ans);
                 $("#id_answer").val(el.dataset.ans);
+                $("ul.answer-list li").removeClass("selected");
+                $(el).addClass("selected")
             })
         })
     })