diff --git a/extra-nixos.nix b/extra-nixos.nix
index 15a0652..dcb7d56 100644
--- a/extra-nixos.nix
+++ b/extra-nixos.nix
@@ -16,7 +16,7 @@
       options = "--delete-older-than 7d";
       persistent = true;
     };
-    settings.auto-optimize-store = true;
+    settings.auto-optimise-store = true;
   };
   
 }