diff --git a/doc/rc/holidays.en-US.rc b/doc/rc/holidays.en-US.rc
index fcded4653..a77ff3d20 100644
--- a/doc/rc/holidays.en-US.rc
+++ b/doc/rc/holidays.en-US.rc
@@ -37,8 +37,6 @@ holiday.en-US4.name=Washington's Birthday
 holiday.en-US4.date=20120220
 holiday.en-US5.name=Patriots' Day
 holiday.en-US5.date=20120416
-holiday.en-US6.name=Patriots' Day
-holiday.en-US6.date=20120416
 holiday.en-US7.name=Memorial Day
 holiday.en-US7.date=20120528
 holiday.en-US8.name=Independence Day
@@ -59,8 +57,6 @@ holiday.en-US15.name=Birthday of Martin Luther King, Jr.
 holiday.en-US15.date=20130121
 holiday.en-US16.name=Washington's Birthday
 holiday.en-US16.date=20130218
-holiday.en-US17.name=Patriots' Day
-holiday.en-US17.date=20130415
 holiday.en-US18.name=Patriots' Day
 holiday.en-US18.date=20130415
 holiday.en-US19.name=Memorial Day