diff --git a/4chan_x.user.js b/4chan_x.user.js
index 644a451a1..22a70660c 100644
--- a/4chan_x.user.js
+++ b/4chan_x.user.js
@@ -3437,7 +3437,7 @@
       return $.on(a, 'click', DeleteButton["delete"]);
     },
     "delete": function() {
-      var board, form, id, m, pwd, self;
+      var board, form, id, m, o, pwd, self;
       $.off(this, 'click', DeleteButton["delete"]);
       this.textContent = 'Deleting...';
       if (m = d.cookie.match(/4chan_pass=([^;]+)/)) {
@@ -3448,10 +3448,12 @@
       id = $.x('preceding-sibling::input', this).name;
       board = $.x('preceding-sibling::span[1]/a', this).pathname.match(/\w+/)[0];
       self = this;
-      form = new FormData();
-      form.append(id, 'delete');
-      form.append('mode', 'usrdel');
-      form.append('pwd', pwd);
+      o = {
+        mode: 'usrdel',
+        pwd: pwd
+      };
+      o[id] = 'delete';
+      form = $.formData(o);
       return $.ajax("https://sys.4chan.org/" + board + "/imgboard.php", {
         onload: function() {
           return DeleteButton.load(self, this.response);
diff --git a/script.coffee b/script.coffee
index c847e28c6..5f101d162 100644
--- a/script.coffee
+++ b/script.coffee
@@ -2634,10 +2634,11 @@ DeleteButton =
     board = $.x('preceding-sibling::span[1]/a', @).pathname.match(/\w+/)[0]
     self = this
 
-    form = new FormData()
-    form.append id, 'delete'
-    form.append 'mode', 'usrdel'
-    form.append 'pwd', pwd
+    o =
+      mode: 'usrdel'
+      pwd: pwd
+    o[id] = 'delete'
+    form = $.formData o
 
     $.ajax "https://sys.4chan.org/#{board}/imgboard.php", {
         onload:  -> DeleteButton.load  self, @response