diff --git a/4chan_x.user.js b/4chan_x.user.js
index 9c02de00e..afb84620d 100644
--- a/4chan_x.user.js
+++ b/4chan_x.user.js
@@ -1349,7 +1349,7 @@
     },
     sys: function() {
       return $.globalEval(function() {
-        var data, href, location, node, textContent, _ref;
+        var data, href, node, textContent, _ref;
         if (node = (_ref = document.querySelector('table font b')) != null ? _ref.firstChild : void 0) {
           textContent = node.textContent, href = node.href;
           data = JSON.stringify({
@@ -1358,7 +1358,7 @@
           });
         }
         parent.postMessage(data, '*');
-        return location = 'about:blank';
+        return window.location = 'about:blank';
       });
     }
   };
@@ -2919,7 +2919,7 @@
         g.PAGENUM = parseInt(temp) || 0;
       }
       if (location.hostname === 'sys.4chan.org') {
-        qr.sys();
+        QR.sys();
         return;
       }
       if (conf['404 Redirect'] && d.title === '4chan - 404' && /^\d+$/.test(g.THREAD_ID)) {
diff --git a/script.coffee b/script.coffee
index 1aef56b56..f60468d3d 100644
--- a/script.coffee
+++ b/script.coffee
@@ -1068,7 +1068,7 @@ QR =
         {textContent, href} = node
         data = JSON.stringify {textContent, href}
       parent.postMessage data, '*'
-      location = 'about:blank'
+      window.location = 'about:blank'
 
 qr =
   # TODO
@@ -2288,7 +2288,7 @@ main =
       g.PAGENUM = parseInt(temp) or 0
 
     if location.hostname is 'sys.4chan.org'
-      qr.sys()
+      QR.sys()
       return
     if conf['404 Redirect'] and d.title is '4chan - 404' and /^\d+$/.test g.THREAD_ID
       redirect()