diff --git a/usr.bin/calendar/calendars/calendar.history b/usr.bin/calendar/calendars/calendar.history
index a39550de5897..9b98c8c7bb14 100644
--- a/usr.bin/calendar/calendars/calendar.history
+++ b/usr.bin/calendar/calendars/calendar.history
@@ -374,7 +374,6 @@
 09/02	Japan signs unconditional surrender on US battleship `Missouri', 1945
 09/05	The first Continental Congress was convened in Philadelphia, 1774
 09/06	149 Pilgrims set forth from England aboard the Mayflower, 1620
-09/06	First Star Trek episode (The Man Trap) aired 1966
 09/06	Pres. McKinley shot, 1901
 09/08	"Star Trek" debuts on NBC (1966)
 09/08	Jack the Ripper kills again, Annie Chapman is second victim, 1888