diff --git a/hosts/sanddorn/configuration.nix b/hosts/sanddorn/configuration.nix
index 8b0685c..12a6f20 100644
--- a/hosts/sanddorn/configuration.nix
+++ b/hosts/sanddorn/configuration.nix
@@ -15,7 +15,7 @@
   };
 
   nix = {
-    autoOptimiseStore = true;
+    settings.auto-optimise-store = true;
   };
 
 
diff --git a/modules/base.nix b/modules/base.nix
index 8d6cc81..a38a300 100755
--- a/modules/base.nix
+++ b/modules/base.nix
@@ -41,7 +41,6 @@
       ../keys/ssh/tassilo
       ../keys/ssh/jonasga
       ../keys/ssh/rouven
-      ../keys/ssh/helene
       ../keys/ssh/joachim
     ];
   };