diff --git a/.dir-locals.el b/.dir-locals.el
index 89305ccd7..069287742 100644
--- a/.dir-locals.el
+++ b/.dir-locals.el
@@ -1 +1,2 @@
-((org-mode (buffer-read-only . t)))
+((nil      (git-commit-major-mode . git-commit-elisp-text-mode))
+ (org-mode (buffer-read-only . t)))