diff --git a/lisp/ChangeLog b/lisp/ChangeLog
index 93b25f21dc1..12356141e79 100644
--- a/lisp/ChangeLog
+++ b/lisp/ChangeLog
@@ -1,5 +1,8 @@
 2012-09-19  Glenn Morris  <rgm@gnu.org>
 
+	* emacs-lisp/macroexp.el (byte-compile-warn-obsolete)
+	(byte-compile-log-warning): Autoload.  (Bug#12371)
+
 	* calendar/calendar.el (calendar-american-month-header)
 	(calendar-european-month-header, calendar-iso-month-header)
 	(calendar-month-header): New options.
diff --git a/lisp/emacs-lisp/macroexp.el b/lisp/emacs-lisp/macroexp.el
index 394225d697e..13064800cd5 100644
--- a/lisp/emacs-lisp/macroexp.el
+++ b/lisp/emacs-lisp/macroexp.el
@@ -111,6 +111,9 @@ and also to avoid outputting the warning during normal execution."
        (mapc (lambda (x) (funcall (eval x))) (cdr form))
        (byte-compile-constant nil)))
 
+(autoload 'byte-compile-warn-obsolete "bytecomp")
+(autoload 'byte-compile-log-warning "bytecomp")
+
 (defun macroexp--expand-all (form)
   "Expand all macros in FORM.
 This is an internal version of `macroexpand-all'.