diff --git a/hosts/nixos/porthos/boot.nix b/hosts/nixos/porthos/boot.nix
index f0cb925..fbc5db7 100644
--- a/hosts/nixos/porthos/boot.nix
+++ b/hosts/nixos/porthos/boot.nix
@@ -7,7 +7,7 @@
     loader.grub = {
       enable = true;
       # Define on which hard drive you want to install Grub.
-      device = "/dev/sda";
+      device = "/dev/disk/by-id/ata-HGST_HUS724020ALA640_PN2181P6J58M1P";
     };
 
     initrd = {