diff --git a/hosts/nixos/yveltal/configuration.nix b/hosts/nixos/yveltal/configuration.nix
index 9d3664a..13a2064 100644
--- a/hosts/nixos/yveltal/configuration.nix
+++ b/hosts/nixos/yveltal/configuration.nix
@@ -60,9 +60,9 @@
     HandleLidSwitch = "suspend-then-hibernate";
   };
   # sets the delay before hibernation for ^
-  systemd.sleep.extraConfig = ''
-    HibernateDelaySec=1800
-  '';
+  systemd.sleep.settings.Sleep = {
+    HibernateDelaySec = "30m";
+    };
 
   # boot (systemd is growing on me)
   boot = {