diff --git a/4chan_x.user.js b/4chan_x.user.js
index b332b8551..caff32559 100644
--- a/4chan_x.user.js
+++ b/4chan_x.user.js
@@ -5010,7 +5010,9 @@
       return Unread.update();
     },
     onUpdate: function(e) {
-      if (!e.detail[404]) {
+      if (e.detail[404]) {
+        return Unread.update();
+      } else {
         return Unread.addPosts(e.detail.newPosts);
       }
     },
diff --git a/src/features.coffee b/src/features.coffee
index 1d28ba99c..d5a75e8ce 100644
--- a/src/features.coffee
+++ b/src/features.coffee
@@ -3330,7 +3330,9 @@ Unread =
     Unread.update()
 
   onUpdate: (e) ->
-    unless e.detail[404]
+    if e.detail[404]
+      Unread.update()
+    else
       Unread.addPosts e.detail.newPosts
 
   post: (e) ->