diff --git a/usr.bin/calendar/calendars/calendar.all b/usr.bin/calendar/calendars/calendar.all
index 0e6d710bd8d3..b46dcb46f0e4 100644
--- a/usr.bin/calendar/calendars/calendar.all
+++ b/usr.bin/calendar/calendars/calendar.all
@@ -9,6 +9,7 @@
 
 #include <calendar.world>
 #include <calendar.croatian>
+#include <calendar.dutch>
 #include <calendar.french>
 #include <calendar.german>
 #include <calendar.hungarian>