diff --git a/nixos/modules/installer/cd-dvd/channel.nix b/nixos/modules/installer/cd-dvd/channel.nix
index eccb19da5cb3..ea7e3e16b8df 100644
--- a/nixos/modules/installer/cd-dvd/channel.nix
+++ b/nixos/modules/installer/cd-dvd/channel.nix
@@ -33,7 +33,7 @@ in
         echo "unpacking the NixOS/Nixpkgs sources..."
         mkdir -p /nix/var/nix/profiles/per-user/root
         ${config.nix.package}/bin/nix-env -p /nix/var/nix/profiles/per-user/root/channels \
-          -i ${channelSources} --quiet --option use-substitutes false
+          -i ${channelSources} --quiet --option build-use-substitutes false
         mkdir -m 0700 -p /root/.nix-defexpr
         ln -s /nix/var/nix/profiles/per-user/root/channels /root/.nix-defexpr/channels
         mkdir -m 0755 -p /var/lib/nixos