diff --git a/nixos/lib/make-disk-image.nix b/nixos/lib/make-disk-image.nix
index 0a4a71fadc42..15302ae82414 100644
--- a/nixos/lib/make-disk-image.nix
+++ b/nixos/lib/make-disk-image.nix
@@ -281,7 +281,7 @@ let format' = format; in let
       --substituters ""
 
     ${optionalString (additionalPaths' != []) ''
-      nix copy --to $root --no-check-sigs ${concatStringsSep " " additionalPaths'}
+      nix --extra-experimental-features nix-command copy --to $root --no-check-sigs ${concatStringsSep " " additionalPaths'}
     ''}
 
     diskImage=nixos.raw