diff --git a/mozilla/calendar/locales/en-US/chrome/calendar/calendar.dtd b/mozilla/calendar/locales/en-US/chrome/calendar/calendar.dtd
index 71e44051f25..d7c6e25d505 100644
--- a/mozilla/calendar/locales/en-US/chrome/calendar/calendar.dtd
+++ b/mozilla/calendar/locales/en-US/chrome/calendar/calendar.dtd
@@ -233,8 +233,6 @@
 <!ENTITY calendar.context.weekview.accesskey          "w">
 <!ENTITY calendar.context.monthview.label             "Switch To Month View">
 <!ENTITY calendar.context.monthview.accesskey         "m">
-<!ENTITY calendar.context.toggleBackground.label      "Toggle Background">
-<!ENTITY calendar.context.toggleBackground.accesskey  "b">
 <!ENTITY calendar.context.reload.label                "Reload">
 <!ENTITY calendar.context.reload.accesskey            "r">
 <!ENTITY calendar.context.emailevent.label            "Email Event">