diff --git a/lisp/org-agenda.el b/lisp/org-agenda.el
index 19535b4..217c701 100644
--- a/lisp/org-agenda.el
+++ b/lisp/org-agenda.el
@@ -7685,7 +7685,9 @@ the cursor position."
 (defun org-agenda-holidays ()
   "Display the holidays for the 3 months around the cursor date."
   (interactive)
-  (org-agenda-execute-calendar-command 'list-calendar-holidays))
+  (if (fboundp 'list-calendar-holidays)
+      (org-agenda-execute-calendar-command 'list-calendar-holidays)
+    (org-agenda-execute-calendar-command 'calendar-list-holidays)))
 
 (defvar calendar-longitude)
 (defvar calendar-latitude)