diff --git a/tv/1systems/bu/config.nix b/tv/1systems/bu/config.nix
index c7f7da24d..a3959cd84 100644
--- a/tv/1systems/bu/config.nix
+++ b/tv/1systems/bu/config.nix
@@ -13,8 +13,6 @@ with import ./lib;
 
   krebs.build.host = config.krebs.hosts.bu;
 
-  networking.hostId = lib.mkDefault "00000000";
-
   networking.wireless.enable = true;
   networking.useDHCP = false;
   networking.interfaces.enp0s25.useDHCP = true;
diff --git a/tv/2configs/default.nix b/tv/2configs/default.nix
index d1384845a..53b11c620 100644
--- a/tv/2configs/default.nix
+++ b/tv/2configs/default.nix
@@ -6,6 +6,7 @@ with import ./lib;
 
   krebs.build.user = config.krebs.users.tv;
 
+  networking.hostId = mkDefault (hashToLength 8 config.networking.hostName);
   networking.hostName = config.krebs.build.host.name;
 
   imports = [