diff --git a/calendar/locales/all-locales b/calendar/locales/all-locales
index 7bcb6f64f2..e407a7606b 100644
--- a/calendar/locales/all-locales
+++ b/calendar/locales/all-locales
@@ -12,6 +12,7 @@ ga-IE
 gl
 he
 hu
+id
 is
 it
 ja