diff --git a/4chan_x.user.js b/4chan_x.user.js
index 9bffa369c..84109f3c2 100644
--- a/4chan_x.user.js
+++ b/4chan_x.user.js
@@ -730,12 +730,9 @@
         if (((_ref = e.target.nodeName) === 'TEXTAREA' || _ref === 'INPUT') && !e.altKey && !e.ctrlKey && !(e.keyCode === 27)) {
           return;
         }
-        if (!(key = keybinds.cb.keyCode(e))) {
+        if ((key = keybinds.cb.keyCode(e)) == null) {
           return;
         }
-        if (key === 'BS') {
-          key = '';
-        }
         thread = nav.getThread();
         switch (key) {
           case conf.close:
diff --git a/script.coffee b/script.coffee
index 5e6353289..1c2f91f81 100644
--- a/script.coffee
+++ b/script.coffee
@@ -520,8 +520,7 @@ keybinds =
   cb:
     keydown: (e) ->
       return if e.target.nodeName in ['TEXTAREA', 'INPUT'] and not e.altKey and not e.ctrlKey and not (e.keyCode is 27)
-      return unless key = keybinds.cb.keyCode e
-      if key is 'BS' then key = ''
+      return unless (key = keybinds.cb.keyCode e)?
 
       thread = nav.getThread()
       switch key