diff --git a/app/views/uploads/new.html.erb b/app/views/uploads/new.html.erb
index 78a0b90be..5ad8ed55e 100644
--- a/app/views/uploads/new.html.erb
+++ b/app/views/uploads/new.html.erb
@@ -154,6 +154,7 @@
   <script>
     $(function() {
       var enabled = true;
+      var maxFilesize = <%= Danbooru.config.max_file_size.to_json %> / (1024 * 1024);
 
       if (!window.FileReader) {
         enabled = false;
@@ -170,6 +171,7 @@
         createImageThumbnails: false,
         addRemoveLinks: false,
         maxFiles: 1,
+        maxFilesize: maxFilesize,
         acceptedFiles: "image/jpeg,image/png,image/gif,video/mp4,video/webm,.swf",
         previewTemplate: '<div class="dz-preview dz-file-preview"><div class="dz-details"><div class="dz-filename"><span data-dz-name></span></div><div class="dz-size" data-dz-size></div></div><div class="dz-progress"><span class="dz-upload" data-dz-uploadprogress></span></div><div class="dz-error-message"><span data-dz-errormessage></span></div></div>',
         init: function() {