diff --git a/.dir-locals.el b/.dir-locals.el
index 7ea6db3f..50d1a911 100644
--- a/.dir-locals.el
+++ b/.dir-locals.el
@@ -1,3 +1,3 @@
-((c++-mode . (mode . clang-format-on-save))))
+((c++-mode . (mode . clang-format-on-save)))
 
 ((c-mode . ((mode c++-mode))))