diff --git a/mozilla/suite/locales/en-US/chrome/mailnews/folderProps.dtd b/mozilla/suite/locales/en-US/chrome/mailnews/folderProps.dtd
index 78090bae18a..5406afc860a 100644
--- a/mozilla/suite/locales/en-US/chrome/mailnews/folderProps.dtd
+++ b/mozilla/suite/locales/en-US/chrome/mailnews/folderProps.dtd
@@ -45,6 +45,9 @@
 <!ENTITY folderCharsetTab.accesskey              "E">
 <!ENTITY folderCharsetOverride.label             "Apply default to all messages in the folder (individual message character encoding settings and auto-detection will be ignored)">
 <!ENTITY folderCharsetOverride.accesskey         "A">
+<!ENTITY folderRebuildSummaryFile.label          "Rebuild Summary File">
+<!ENTITY folderRebuildSummaryFile.accesskey      "R">
+<!ENTITY folderRebuildSummaryFileTip.label       "Rebuild Summary File">
 
 <!ENTITY retention.label "Retention Policy">
 <!ENTITY retentionUseDefault.label "Use server defaults">