diff --git a/mozilla/mail/base/content/msgSelectOffline.xul b/mozilla/mail/base/content/msgSelectOffline.xul
index 9f82d97d58c..e0ae98b655a 100644
--- a/mozilla/mail/base/content/msgSelectOffline.xul
+++ b/mozilla/mail/base/content/msgSelectOffline.xul
@@ -67,6 +67,7 @@
 
   <tree id="synchronizeTree" flex="1" hidecolumnpicker="true"
         datasources="rdf:msgaccountmanager rdf:mailnewsfolders" ref="msgaccounts:/" flags="dont-build-content"
+        onkeypress="onSynchronizeTreeKeyPress(event);"
         onclick="onSynchronizeClick(event);">
     <template>
       <rule>