diff --git a/nixos/modules/installer/tools/nixos-generate-config.pl b/nixos/modules/installer/tools/nixos-generate-config.pl
index 5674bf348d10..65b5c0331f42 100644
--- a/nixos/modules/installer/tools/nixos-generate-config.pl
+++ b/nixos/modules/installer/tools/nixos-generate-config.pl
@@ -90,7 +90,7 @@ if ($status != 0 || join("", @systemLines) =~ /error/) {
     die "Failed to retrieve current system type from nix.\n";
 }
 my $system = substr(@systemLines[0], 0, -1);
-push @attrs, "nixpkgs.system = lib.mkDefault $system;";
+push @attrs, "nixpkgs.hostPlatform = lib.mkDefault $system;";
 
 
 my $cpuinfo = read_file "/proc/cpuinfo";