(lgrep, rgrep): Use add-to-history.

1 files changed, 2 insertions, 2 deletions

diff --git a/lisp/progmodes/grep.el b/lisp/progmodes/grep.el
index c695272e92b..403ea40c839 100644
--- a/lisp/progmodes/grep.el
+++ b/lisp/progmodes/grep.el
@@ -676,7 +676,7 @@ This command shares argument histories with \\[rgrep] and \\[grep]."
               (setq command
                     (read-from-minibuffer "Confirm: "
                                           command nil nil 'grep-history))
-            (push command grep-history))))
+            (add-to-history 'grep-history command))))
       (when command
         ;; Setting process-setup-function makes exit-message-function work
         ;; even when async processes aren't supported.
@@ -742,7 +742,7 @@ This command shares argument histories with \\[lgrep] and \\[grep-find]."
               (setq command
                     (read-from-minibuffer "Confirm: "
                                           command nil nil 'grep-find-history))
-            (push command grep-find-history))
+            (add-to-history 'grep-find-history command))
           (compilation-start command 'grep-mode))))))