diff --git a/modules/installer/cd-dvd/system-tarball-sheevaplug.nix b/modules/installer/cd-dvd/system-tarball-sheevaplug.nix
index 177496c24c7..f8b6b632ea7 100644
--- a/modules/installer/cd-dvd/system-tarball-sheevaplug.nix
+++ b/modules/installer/cd-dvd/system-tarball-sheevaplug.nix
@@ -132,6 +132,7 @@ in
     [
       "selinux=0"
       "console=tty1"
+      # "console=ttyS0,115200n8"  # serial console
     ];
 
   boot.kernelPackages = pkgs.linuxPackages_2_6_35;