diff --git a/plugins/Sidebar/SidebarPlugin.py b/plugins/Sidebar/SidebarPlugin.py
index 46219d8a..f1a5e8e8 100644
--- a/plugins/Sidebar/SidebarPlugin.py
+++ b/plugins/Sidebar/SidebarPlugin.py
@@ -321,14 +321,15 @@ class UiWebsocketPlugin(object):
              <input type="checkbox" class="checkbox" id="checkbox-autodownloadoptional" {checked}/><div class="checkbox-skin"></div>
         """))
 
-        autodownload_bigfile_size_limit = int(site.settings.get("autodownload_bigfile_size_limit", config.autodownload_bigfile_size_limit))
-        body.append(_("""
-            <div class='settings-autodownloadoptional'>
-             <label>{_[Auto download big file size limit]}</label>
-             <input type='text' class='text text-num' value="{autodownload_bigfile_size_limit}" id='input-autodownload_bigfile_size_limit'/><span class='text-post'>MB</span>
-             <a href='#Set' class='button' id='button-autodownload_bigfile_size_limit'>{_[Set]}</a>
-            </div>
-        """))
+        if hasattr(config, "autodownload_bigfile_size_limit"):
+            autodownload_bigfile_size_limit = int(site.settings.get("autodownload_bigfile_size_limit", config.autodownload_bigfile_size_limit))
+            body.append(_("""
+                <div class='settings-autodownloadoptional'>
+                 <label>{_[Auto download big file size limit]}</label>
+                 <input type='text' class='text text-num' value="{autodownload_bigfile_size_limit}" id='input-autodownload_bigfile_size_limit'/><span class='text-post'>MB</span>
+                 <a href='#Set' class='button' id='button-autodownload_bigfile_size_limit'>{_[Set]}</a>
+                </div>
+            """))
         body.append("</li>")
 
     def sidebarRenderBadFiles(self, body, site):