diff --git a/layout/_partial/comment/gitalk.ejs b/layout/_partial/comment/gitalk.ejs
index 559ae27..048922d 100644
--- a/layout/_partial/comment/gitalk.ejs
+++ b/layout/_partial/comment/gitalk.ejs
@@ -8,13 +8,19 @@
     <script src="https://unpkg.com/gitalk/dist/gitalk.min.js"></script>
     <div id="gitalk-container"></div>
     <script>
+        let __gitalk__pathname = decodeURI(location.pathname);
+        const __gitalk__pathnameLength = __gitalk__pathname.length;
+        const __gitalk__pathnameMaxLength = 50;
+        if (__gitalk__pathnameLength > __gitalk__pathnameMaxLength) {
+            __gitalk__pathname = __gitalk__pathname.substring(0, __gitalk__pathnameMaxLength - 3) + '...';
+        }
         const gitalk = new Gitalk({
             clientID: '<%= theme.comment.gitalk.client_id %>',
             clientSecret: '<%= theme.comment.gitalk.client_secret %>',
             repo: '<%= theme.comment.gitalk.repository %>',
             owner: '<%= theme.comment.gitalk.github_id %>',
             admin: ['<%= theme.comment.gitalk.github_id %>'],
-            id: location.pathname,
+            id: __gitalk__pathname,
             language: '<%= config.language %>'
         })
         gitalk.render('gitalk-container')