diff --git a/README.org b/README.org
index 3b9043b..1731ebc 100644
--- a/README.org
+++ b/README.org
@@ -1249,7 +1249,8 @@ file.
 #+name: lst:enable-vertico-mode
 #+begin_src emacs-lisp
 (when (fboundp 'savehist-mode)
-  (savehist-mode +1)
+  (savehist-mode +1))
+(with-eval-after-load 'savehist-mode
   (custom-set-variables
    '(savehist-additional-variables
      '(eww-history
@@ -4226,9 +4227,9 @@ and listing [[lst:setting-python-shell-virtualenv-root]] to set
         ("ipython"
          (custom-set-variables
           `(python-shell-interpreter
-            ,(or (executable-find "ipython3") (executable-find "ipython")))
-          '(python-shell-interpreter-args
-            "--simple-prompt --HistoryAccessor.enabled=False"))))
+            ,(or (executable-find "ipython3") (executable-find "ipython"))))
+         (setq python-shell-interpreter-args
+               "--simple-prompt --HistoryAccessor.enabled=False")))
       (message "Now `python-shell-interpreter' equals %S"
                python-shell-interpreter))))
 #+end_src
@@ -4990,19 +4991,12 @@ Listing [[lst:configure-browse-url]] configures =browse-url=.
             (seq (+? nonl) (or ".mp4" ".webm") eos)))
     "Match hyperlinks to browse with mpv.")
 
-  (if (version< emacs-version "28.0")
-      (custom-set-variables
-       '(browse-url-browser-function
-         `((,browse-url-mpv-regexp . browse-url-mpv)
-           ("." . eww-browse-url))))
-    (custom-set-variables
-     '(browse-url-handlers
-       `((,browse-url-mpv-regexp . browse-url-mpv)
-         ("." . eww-browse-url)))))
-
   (custom-set-variables
    `(browse-url-generic-program ,(or (when (eq system-type 'darwin) "open")
-                                     (executable-find "firefox")))))
+                                     (executable-find "firefox")))
+   '(browse-url-handlers
+     `((,browse-url-mpv-regexp . browse-url-mpv)
+       ("." . eww-browse-url)))))
 #+end_src
 
 *** [[https://en.wikipedia.org/wiki/Eww_(web_browser)][Emacs Web Wowser]]
@@ -5148,19 +5142,21 @@ initializes a list of =webjump-sites=.
 #+begin_src emacs-lisp
 (with-eval-after-load 'gnus
   (custom-set-variables
-   '(gnus-select-method '(nntp "news.gmane.io"))
-   (with-eval-after-load 'gnus-start
-     (custom-set-variables
-      '(gnus-check-bogus-newsgroups nil)
-      '(gnus-check-new-newsgroups 'ask-server)
-      '(gnus-read-newsrc-file t)
-      '(gnus-read-active-file 'some)
-      '(gnus-save-killed-list t)
-      '(gnus-save-newsrc-file t)
-      '(gnus-use-dribble-file t)))
-   (with-eval-after-load 'gnus-sum
-     (custom-set-variables
-      '(gnus-thread-hide-subtree t)))))
+   '(gnus-select-method '(nntp "news.gmane.io"))))
+
+(with-eval-after-load 'gnus-start
+  (custom-set-variables
+   '(gnus-check-bogus-newsgroups nil)
+   '(gnus-check-new-newsgroups 'ask-server)
+   '(gnus-read-newsrc-file t)
+   '(gnus-read-active-file 'some)
+   '(gnus-save-killed-list t)
+   '(gnus-save-newsrc-file t)
+   '(gnus-use-dribble-file t)))
+
+(with-eval-after-load 'gnus-sum
+  (custom-set-variables
+   '(gnus-thread-hide-subtree t)))
 #+end_src
 
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