diff --git a/nixos/modules/config/users-groups.nix b/nixos/modules/config/users-groups.nix
index a0fd99732bd..2d9b941a2ca 100644
--- a/nixos/modules/config/users-groups.nix
+++ b/nixos/modules/config/users-groups.nix
@@ -369,7 +369,7 @@ in
         home = "/root";
         shell = cfg.defaultUserShell;
         group = "root";
-        hashedPassword = config.security.initialRootPassword;
+        hashedPassword = mkDefault config.security.initialRootPassword;
       };
       nobody = {
         uid = ids.uids.nobody;