diff --git a/builds/appchan-x.user.js b/builds/appchan-x.user.js
index 75f49f998..519d47d44 100644
--- a/builds/appchan-x.user.js
+++ b/builds/appchan-x.user.js
@@ -11886,7 +11886,7 @@
         if (ID <= Unread.lastReadPost || post.isHidden || QR.db.get({
           boardID: post.board.ID,
           threadID: post.thread.ID,
-          postID: post.ID
+          postID: ID
         })) {
           continue;
         }
diff --git a/builds/crx/script.js b/builds/crx/script.js
index 7cb86144b..658796444 100644
--- a/builds/crx/script.js
+++ b/builds/crx/script.js
@@ -11870,7 +11870,7 @@
         if (ID <= Unread.lastReadPost || post.isHidden || QR.db.get({
           boardID: post.board.ID,
           threadID: post.thread.ID,
-          postID: post.ID
+          postID: ID
         })) {
           continue;
         }
diff --git a/src/Monitoring/Unread.coffee b/src/Monitoring/Unread.coffee
index b3cd4db98..059fa2dc6 100755
--- a/src/Monitoring/Unread.coffee
+++ b/src/Monitoring/Unread.coffee
@@ -73,7 +73,7 @@ Unread =
       continue if ID <= Unread.lastReadPost or post.isHidden or QR.db.get {
         boardID:  post.board.ID
         threadID: post.thread.ID
-        postID:   post.ID
+        postID:   ID
       }
       Unread.posts.push post unless post.prev or post.next
       Unread.addPostQuotingYou post