diff --git a/calendar/locales/all-locales b/calendar/locales/all-locales
index ff477901ebf..10e1ebcb97a 100644
--- a/calendar/locales/all-locales
+++ b/calendar/locales/all-locales
@@ -10,6 +10,7 @@ hu
 it
 ja
 mn
+nb-NO
 nl
 pl
 pt-BR