diff --git a/4chan_x.js b/4chan_x.js
index c3f285170..275813ba6 100644
--- a/4chan_x.js
+++ b/4chan_x.js
@@ -827,7 +827,7 @@
         window.scrollTo(0, 0);
         return;
       }
-      if (i === 10) {
+      if (i === nav.threads.length) {
         window.location = "" + (g.PAGENUM + 1) + "#p0";
         return;
       }
diff --git a/script.coffee b/script.coffee
index 870728b8f..ed1773a65 100644
--- a/script.coffee
+++ b/script.coffee
@@ -615,7 +615,7 @@ nav =
     if i is -1
       window.scrollTo 0, 0
       return
-    if i is 10
+    if i is nav.threads.length
       window.location = "#{g.PAGENUM + 1}#p0"
       return