diff --git a/mozilla/toolkit/mozapps/downloads/content/pref-downloads.xul b/mozilla/toolkit/mozapps/downloads/content/pref-downloads.xul
index a0581f6e9fd..f238090c29c 100755
--- a/mozilla/toolkit/mozapps/downloads/content/pref-downloads.xul
+++ b/mozilla/toolkit/mozapps/downloads/content/pref-downloads.xul
@@ -63,7 +63,8 @@
     </radiogroup>
   </groupbox>
 
-  <groupbox align="start">
+#ifndef MOZ_THUNDERBIRD
+    <groupbox align="start">
     <caption label="&downloadManagerWindow.label;"/>
     
     <checkbox id="showWhenStarting" label="&showWhenStarting.label;" 
@@ -71,7 +72,8 @@
               oncommand="toggleDMPrefUI(event.target);"/>
     <checkbox id="closeWhenDone" label="&closeWhenDone.label;" class="indent"
               prefstring="browser.download.closeWhenDone"/>
-  </groupbox>
+  </groupbox>
+#endif
   
   <groupbox flex="1">
     <caption label="&fileTypes.label;"/>