diff --git a/modules/installer/cd-dvd/iso-image.nix b/modules/installer/cd-dvd/iso-image.nix
index cf76151c2ae2..7b050f8dd6a3 100644
--- a/modules/installer/cd-dvd/iso-image.nix
+++ b/modules/installer/cd-dvd/iso-image.nix
@@ -205,9 +205,7 @@ in
     else
       [ config.boot.kernelPackages.aufs ];
 
-  boot.initrd.availableKernelModules = [ "aufs" "squashfs" "iso9660" ];
-
-  boot.initrd.kernelModules = [ "loop" ];
+  boot.initrd.kernelModules = [ "aufs" "squashfs" "iso9660" "loop" ];
 
   boot.kernelModules = pkgs.stdenv.lib.optional config.isoImage.makeEfiBootable "efivars";