diff --git a/hm/configurations.nix b/hm/configurations.nix
index c0bbb16..edf45d9 100644
--- a/hm/configurations.nix
+++ b/hm/configurations.nix
@@ -11,6 +11,9 @@
         trim_trailing_whitespace = "true";
         insert_final_newline = "true";
       };
+      "Makefile" = {
+        indent_style = "tab";
+      };
       "*.py" = {
         indent_size = 4;
       };