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-rw-r--r--lisp/emacs-lisp/lisp-mode.el2
1 files changed, 1 insertions, 1 deletions
diff --git a/lisp/emacs-lisp/lisp-mode.el b/lisp/emacs-lisp/lisp-mode.el
index 011f1f57dff..37d2d0cb47f 100644
--- a/lisp/emacs-lisp/lisp-mode.el
+++ b/lisp/emacs-lisp/lisp-mode.el
@@ -869,7 +869,7 @@ which see."
(defcustom lisp-indent-offset nil
"If non-nil, indent second line of expressions that many more columns."
:group 'lisp
- :type '(choice nil integer))
+ :type '(choice (const nil) integer))
(put 'lisp-body-indent 'safe-local-variable
(lambda (x) (or (null x) (integerp x))))