diff --git a/configuration.nix b/configuration.nix
index fb7ec6a..3ee7b57 100644
--- a/configuration.nix
+++ b/configuration.nix
@@ -14,6 +14,7 @@
     users = {
       smayzy = import ./home.nix;
     };
+    backupFileExtension = "backup";
   };
 
   system.stateVersion = "24.11";