diff --git a/mozilla/calendar/locales/en-US/chrome/calendar/calendar.dtd b/mozilla/calendar/locales/en-US/chrome/calendar/calendar.dtd
index 4e86c7387bb..74e51b8e09b 100644
--- a/mozilla/calendar/locales/en-US/chrome/calendar/calendar.dtd
+++ b/mozilla/calendar/locales/en-US/chrome/calendar/calendar.dtd
@@ -76,7 +76,7 @@
 <!ENTITY calendar.today.button.label       "Today">
 <!ENTITY calendar.tomorrow.button.label       "Tomorrow">
 <!ENTITY calendar.nextweek.button.label       "Next Week">
-<!ENTITY calendar.nextweek.button.label       "This Week">
+<!ENTITY calendar.thisweek.button.label       "This Week">
 
 <!ENTITY calendar.events.filter.all.label "All Events">
 <!ENTITY calendar.events.filter.today.label "Today's Events">