diff --git a/lisp/mail/mailabbrev.el b/lisp/mail/mailabbrev.el
index 2f349b99bb6..f974f2083dc 100644
--- a/lisp/mail/mailabbrev.el
+++ b/lisp/mail/mailabbrev.el
@@ -603,7 +603,7 @@ In other respects, this behaves like `end-of-buffer', which see."
 (eval-after-load "sendmail"
   '(progn
      (define-key mail-mode-map "\C-c\C-a" 'mail-abbrev-insert-alias)
-     (define-key mail-mode-map "\e\t"	; like lisp-complete-symbol
+     (define-key mail-mode-map "\e\t"	; like completion-at-point
        'mail-abbrev-complete-alias)))
 
 ;;(define-key mail-mode-map "\C-n" 'mail-abbrev-next-line)