diff --git a/script/buct-cource-helper.user.js b/script/buct-cource-helper.user.js
index 415cfec..c873396 100644
--- a/script/buct-cource-helper.user.js
+++ b/script/buct-cource-helper.user.js
@@ -23,6 +23,10 @@
         autoMode: false
     };
 
+    function strip(s) {
+        return s.replace(/^[\s\uFEFF\xA0]+|[\s\uFEFF\xA0]+$/g, "");
+    }
+
     class Poll {
         polling = true;
 
@@ -82,9 +86,10 @@
             }
             const labels = child.getElementsByTagName("label");
             for (const label of labels) {
-                answers.push(label.innerText.trim());
+                answers.push(strip(label.innerText));
             }
         }
+        console.log(answers);
         return question + "\n\n" + answers.map((s) => "- " + s.replaceAll("\t", "")).join("\n");
     }
 
@@ -108,15 +113,15 @@
             const labels = child.getElementsByTagName("label");
             if (labels.length > 1) {
                 for (const label of labels) {
-                    options[label.innerText.trim().replaceAll("\t", "")] = label.children[0];
+                    options[strip(label.innerText)] = label.children[0];
                 }
             } else {
-                options[child.innerText.trim().replaceAll("\t", "")] =
+                options[strip(child.innerText)] =
                     child.children[0].children[0];
             }
         }
         for (const answer of answers) {
-            const input = options[answer.trim()];
+            const input = options[strip(answer)];
             if (!input) {
                 continue;
             }