diff --git a/contrib/js/nntpchan/post-reply.js b/contrib/js/nntpchan/post-reply.js
index 8471431..157dcfb 100644
--- a/contrib/js/nntpchan/post-reply.js
+++ b/contrib/js/nntpchan/post-reply.js
@@ -133,6 +133,7 @@ ReplyBox.prototype.clear = function() {
 }
 
 ReplyBox.prototype.reload = function() {
+    var self = this;
     self.captcha_img.src = "/captcha/img?" + new Date().getTime();
 }