diff --git a/nixos/modules/installer/cd-dvd/system-tarball-pc.nix b/nixos/modules/installer/cd-dvd/system-tarball-pc.nix
index b7965fc6e0b..fcb96f7a24f 100644
--- a/nixos/modules/installer/cd-dvd/system-tarball-pc.nix
+++ b/nixos/modules/installer/cd-dvd/system-tarball-pc.nix
@@ -109,7 +109,7 @@ in
   # not be started by default on the installation CD because the
   # default root password is empty.
   services.openssh.enable = true;
-  jobs.openssh.startOn = pkgs.lib.mkOverrideTemplate 50 "";
+  jobs.openssh.startOn = pkgs.lib.mkOverride 50 "";
 
   # To be able to use the systemTarball to catch troubles.
   boot.crashDump = {