diff --git a/CHANGELOG.md b/CHANGELOG.md
index e1b940f0e..e11af54ea 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -63,6 +63,9 @@
 
 ### v1.13.15
 
+**v1.13.15.12** *(2018-05-05)* - [[Userscript](https://raw.githubusercontent.com/ccd0/4chan-x/1.13.15.12/builds/4chan-X-noupdate.user.js)] [[Chrome extension](https://raw.githubusercontent.com/ccd0/4chan-x/1.13.15.12/builds/4chan-X-noupdate.crx)]
+- Update workaround for ad breaking 4chan, take two.
+
 **v1.13.15.11** *(2018-05-05)* - [[Userscript](https://raw.githubusercontent.com/ccd0/4chan-x/1.13.15.11/builds/4chan-X-noupdate.user.js)] [[Chrome extension](https://raw.githubusercontent.com/ccd0/4chan-x/1.13.15.11/builds/4chan-X-noupdate.crx)]
 - Fix issue with HTTPS Redirect. #1876
 - Update workaround for ad breaking 4chan.
diff --git a/src/main/Main.coffee b/src/main/Main.coffee
index 21b0e1180..6e697632e 100644
--- a/src/main/Main.coffee
+++ b/src/main/Main.coffee
@@ -46,8 +46,16 @@ Main =
 
     # XXX Remove document-breaking ad
     if location.hostname is 'boards.4chan.org'
-      $.onExists doc, '#delform > .adg-rects', $.rm
-      $.onExists doc, '#adg-ol', $.rm
+      $.global ->
+        fromCharCode0 = String.fromCharCode
+        String.fromCharCode = ->
+          if document.body
+            String.fromCharCode = fromCharCode0
+          else if document.currentScript and not document.currentScript.src
+            throw Error()
+          fromCharCode0.apply @, arguments
+      $.asap docSet, ->
+        $.onExists doc, 'iframe[srcdoc]', $.rm
 
     flatten null, Config