diff --git a/.dir-locals.el b/.dir-locals.el
index b313945936c..7812beb001c 100644
--- a/.dir-locals.el
+++ b/.dir-locals.el
@@ -4,6 +4,7 @@
 ((nil . ((tab-width . 8)
          (sentence-end-double-space . t)
          (fill-column . 70)
+	 (emacs-lisp-docstring-fill-column . 65)
          (bug-reference-url-format . "https://debbugs.gnu.org/%s")))
  (c-mode . ((c-file-style . "GNU")
             (c-noise-macro-names . ("INLINE" "ATTRIBUTE_NO_SANITIZE_UNDEFINED" "UNINIT" "CALLBACK" "ALIGN_STACK"))