diff --git a/lisp/org-agenda.el b/lisp/org-agenda.el
index a78b98a47..7b9629821 100644
--- a/lisp/org-agenda.el
+++ b/lisp/org-agenda.el
@@ -1243,6 +1243,16 @@ in the past."
   :version "24.1"
   :type 'boolean)
 
+(defcustom org-agenda-diary-file 'diary-file
+  "File to which to add new entries with the `i' key in agenda and calendar.
+When this is the symbol `diary-file', the functionality in the Emacs
+calendar will be used to add entries to the `diary-file'.  But when this
+points to a file, `org-agenda-diary-entry' will be used instead."
+  :group 'org-agenda
+  :type '(choice
+	  (const :tag "The standard Emacs diary file" diary-file)
+	  (file :tag "Special Org file diary entries")))
+
 (defcustom org-agenda-include-diary nil
   "If non-nil, include in the agenda entries from the Emacs Calendar's diary.
 Custom commands can set this variable in the options section."
diff --git a/lisp/org.el b/lisp/org.el
index 403c7bd95..f7547eba1 100644
--- a/lisp/org.el
+++ b/lisp/org.el
@@ -3268,16 +3268,6 @@ A nil value means to remove them, after a query, from the list."
   :group 'org-agenda
   :type 'boolean)
 
-(defcustom org-agenda-diary-file 'diary-file
-  "File to which to add new entries with the `i' key in agenda and calendar.
-When this is the symbol `diary-file', the functionality in the Emacs
-calendar will be used to add entries to the `diary-file'.  But when this
-points to a file, `org-agenda-diary-entry' will be used instead."
-  :group 'org-agenda
-  :type '(choice
-	  (const :tag "The standard Emacs diary file" diary-file)
-	  (file :tag "Special Org file diary entries")))
-
 (defgroup org-latex nil
   "Options for embedding LaTeX code into Org mode."
   :tag "Org LaTeX"