diff --git a/mozilla/mail/base/content/subscribe.xul b/mozilla/mail/base/content/subscribe.xul
index 7b8a524919c..210f19263c8 100644
--- a/mozilla/mail/base/content/subscribe.xul
+++ b/mozilla/mail/base/content/subscribe.xul
@@ -94,7 +94,8 @@
               seltype="multiple"
               datasources="rdf:null"
               flags="dont-build-content"
-              disableKeyNavigation="true"
+              disableKeyNavigation="true"
+              statedatasource="rdf:null"
               onkeypress="onSubscribeTreeKeyPress(event);"
               onclick="SubscribeOnClick(event);"> 
           <template>