diff --git a/nixos/modules/installer/virtualbox-demo.nix b/nixos/modules/installer/virtualbox-demo.nix
index 2e1b4b3998b..af3e1aecca7 100644
--- a/nixos/modules/installer/virtualbox-demo.nix
+++ b/nixos/modules/installer/virtualbox-demo.nix
@@ -57,7 +57,5 @@ with lib;
 
   # Enable the OpenSSH daemon.
   # services.openssh.enable = true;
-
-  system.stateVersion = mkDefault "18.03";
   '';
 }