1 files changed, 1 insertions, 1 deletions

diff --git a/lisp/calendar/calendar.el b/lisp/calendar/calendar.el
index bb1710f917d..bf6f3daaf38 100644
--- a/lisp/calendar/calendar.el
+++ b/lisp/calendar/calendar.el
@@ -613,7 +613,7 @@ somewhat; setting it to nil makes the diary display faster.")
     (holiday-fixed 2 14 "Valentine's Day")
     (holiday-float 2 1 3 "President's Day")
     (holiday-fixed 3 17 "St. Patrick's Day")
-    (holiday-fixed 4 1 "April Fool's Day")
+    (holiday-fixed 4 1 "April Fools' Day")
     (holiday-float 5 0 2 "Mother's Day")
     (holiday-float 5 1 -1 "Memorial Day")
     (holiday-fixed 6 14 "Flag Day")