diff --git a/homes/modules/editor/helix.nix b/homes/modules/editor/helix.nix
index 555ec75..e7d6003 100755
--- a/homes/modules/editor/helix.nix
+++ b/homes/modules/editor/helix.nix
@@ -131,6 +131,8 @@
         }
         {
           name = "c";
+          file-types = ["c" "h"]; # use .hpp for C++
+          auto-format = false;
           formatter.command = "${pkgs.clang-tools}/bin/clang-format";
           language-servers = ["clangd"];
         }