diff --git a/4chan_x.js b/4chan_x.js
index 14afa617e..71d848f0e 100644
--- a/4chan_x.js
+++ b/4chan_x.js
@@ -1894,7 +1894,7 @@
       if (root.className === 'inline') {
         return;
       }
-      tid = g.THREAD_ID || root.parentNode.firstChild.id;
+      tid = g.THREAD_ID || $.x('ancestor::div[@class="thread"]/div', this).id;
       _ref = $$('a.quotelink', root);
       _results = [];
       for (_i = 0, _len = _ref.length; _i < _len; _i++) {
diff --git a/script.coffee b/script.coffee
index b8c56dd71..1b5864a7d 100644
--- a/script.coffee
+++ b/script.coffee
@@ -1495,7 +1495,7 @@ quoteOP =
     g.callbacks.push quoteOP.node
   node: (root) ->
     return if root.className is 'inline'
-    tid = g.THREAD_ID or root.parentNode.firstChild.id
+    tid = g.THREAD_ID or $.x('ancestor::div[@class="thread"]/div', this).id
     for quote in $$ 'a.quotelink', root
       if quote.hash[1..] is tid
         quote.textContent += ' (OP)'