diff --git a/nixos/ben.nix b/nixos/ben.nix
index 603dd66f..1e6398ae 100644
--- a/nixos/ben.nix
+++ b/nixos/ben.nix
@@ -1,6 +1,5 @@
 { pkgs, inputs, config, makeEnable, ... }:
 makeEnable config "myModules.ben" true {
-  home-manager.backupFileExtension = "backup"; # Add this line
   home-manager.users.ben = {
     programs.zsh = {
       enable = true;
diff --git a/nixos/nix.nix b/nixos/nix.nix
index 91169245..509cb9ef 100644
--- a/nixos/nix.nix
+++ b/nixos/nix.nix
@@ -19,7 +19,7 @@
     };
     home-manager.useGlobalPkgs = true;
     home-manager.useUserPackages = true;
-    home-manager.backupFileExtension = "backup";
+    home-manager.backupFileExtension = "hm-backup";
     home-manager.sharedModules = [ ./home-manager.nix ];
 
     nix = rec {