diff --git a/os/hs/configuration.nix b/os/hs/configuration.nix
index 2d718e2..d3f73b4 100644
--- a/os/hs/configuration.nix
+++ b/os/hs/configuration.nix
@@ -158,5 +158,5 @@ in {
     }
   ];
 
-  nix.settings.store-auto-optimise = true;
+  nix.settings.auto-optimise-store = true;
 }