diff --git a/nixos/modules/installer/tools/tools.nix b/nixos/modules/installer/tools/tools.nix
index cb2dbf6c859..1dc0578daca 100644
--- a/nixos/modules/installer/tools/tools.nix
+++ b/nixos/modules/installer/tools/tools.nix
@@ -40,7 +40,7 @@ let
   };
 
   nixos-option =
-    if lib.versionAtLeast (lib.getVersion pkgs.nix) "2.4pre"
+    if lib.versionAtLeast (lib.getVersion config.nix.package) "2.4pre"
     then null
     else pkgs.callPackage ./nixos-option { };