diff --git a/.dir-locals.el b/.dir-locals.el
index 967cb411..03345805 100644
--- a/.dir-locals.el
+++ b/.dir-locals.el
@@ -1,3 +1 @@
-((c++-mode . ((mode . clang-format-on-save))))
-
-((c-mode . ((mode c++-mode))))
+((c-mode . ((mode c++-mode))) (c++-mode . ((mode . clang-format-on-save))))