diff --git a/modules/installer/cd-dvd/installation-cd-base.nix b/modules/installer/cd-dvd/installation-cd-base.nix
index aff46fbac342..375941d24479 100644
--- a/modules/installer/cd-dvd/installation-cd-base.nix
+++ b/modules/installer/cd-dvd/installation-cd-base.nix
@@ -66,5 +66,5 @@ in
 
   # To speed up installation a little bit, include the complete stdenv
   # in the Nix store on the CD.
-  isoImage.storeContents = [ pkgs.stdenv ];
+  isoImage.storeContents = [ pkgs.stdenv pkgs.busybox ];
 }