diff --git a/4chan_x.user.js b/4chan_x.user.js
index 58ddcd905..4f5eb8d5e 100644
--- a/4chan_x.user.js
+++ b/4chan_x.user.js
@@ -2512,9 +2512,10 @@
     },
     cooldown: {
       start: function(e) {
-        var fullID, seconds;
-        seconds = g.BOARD.ID === 'q' ? 600 : 30;
-        fullID = "" + g.BOARD + "." + e.detail.postID;
+        var board, fullID, postID, seconds, _ref;
+        _ref = e.detail, board = _ref.board, postID = _ref.postID;
+        seconds = board.ID === 'q' ? 600 : 30;
+        fullID = "" + board + "." + postID;
         return DeleteLink.cooldown.count(fullID, seconds, seconds);
       },
       count: function(fullID, seconds, length) {
@@ -6339,6 +6340,8 @@
         } else if (g.BOARD.ID === 'f' && filetag === '9999') {
           err = 'Invalid tag specified.';
         }
+      } else if (g.BOARD.threads[threadID].isSticky) {
+        err = 'You can\'t reply to this thread anymore.';
       } else if (!(reply.com || reply.file)) {
         err = 'No file selected.';
       }
diff --git a/src/features.coffee b/src/features.coffee
index dea879758..59866affc 100644
--- a/src/features.coffee
+++ b/src/features.coffee
@@ -1341,12 +1341,13 @@ DeleteLink =
 
   cooldown:
     start: (e) ->
+      {board, postID} = e.detail
       seconds =
-        if g.BOARD.ID is 'q'
+        if board.ID is 'q'
           600
         else
           30
-      fullID = "#{g.BOARD}.#{e.detail.postID}"
+      fullID = "#{board}.#{postID}"
       DeleteLink.cooldown.count fullID, seconds, seconds
     count: (fullID, seconds, length) ->
       return unless 0 <= seconds <= length
diff --git a/src/qr.coffee b/src/qr.coffee
index 6a92e0f8d..cfa4d6401 100644
--- a/src/qr.coffee
+++ b/src/qr.coffee
@@ -647,8 +647,10 @@ QR =
         err = 'No file selected.'
       else if g.BOARD.ID is 'f' and filetag is '9999'
         err = 'Invalid tag specified.'
+    else if g.BOARD.threads[threadID].isSticky
+      err = 'You can\'t reply to this thread anymore.'
     else unless reply.com or reply.file
-        err = 'No file selected.'
+      err = 'No file selected.'
 
     if QR.captcha.isEnabled and !err
       # get oldest valid captcha