diff --git a/4chan_x.user.js b/4chan_x.user.js
index 7b2a01f44..f18158fa6 100644
--- a/4chan_x.user.js
+++ b/4chan_x.user.js
@@ -1841,7 +1841,7 @@
         });
         ta.style.cssText = $.get('QR.size', '');
       }
-      mimeTypes = $('.rules').firstChild.textContent.match(/: (.+) /)[1].toLowerCase().replace(/\w+/g, function(type) {
+      mimeTypes = $('.rules').firstElementChild.textContent.match(/: (.+)/)[1].toLowerCase().replace(/\w+/g, function(type) {
         switch (type) {
           case 'jpg':
             return 'image/jpeg';
diff --git a/changelog b/changelog
index f8413bbd0..01f9474ed 100644
--- a/changelog
+++ b/changelog
@@ -1,6 +1,7 @@
 master
 - Mayhem
   Auto-GIF will not run in /gif/.
+  Fix QR filetype checking.
 
 2.29.3
 - Mayhem
diff --git a/script.coffee b/script.coffee
index 8e930ed96..0b0e49333 100644
--- a/script.coffee
+++ b/script.coffee
@@ -1405,7 +1405,7 @@ QR =
       ta.style.cssText = $.get 'QR.size', ''
 
     # Allow only this board's supported files.
-    mimeTypes = $('.rules').firstChild.textContent.match(/: (.+) /)[1].toLowerCase().replace /\w+/g, (type) ->
+    mimeTypes = $('.rules').firstElementChild.textContent.match(/: (.+)/)[1].toLowerCase().replace /\w+/g, (type) ->
       switch type
         when 'jpg'
           'image/jpeg'