diff --git a/nixos/modules/installer/cd-dvd/installation-cd-base.nix b/nixos/modules/installer/cd-dvd/installation-cd-base.nix
index d620e5e30fdf..48aabadb16a8 100644
--- a/nixos/modules/installer/cd-dvd/installation-cd-base.nix
+++ b/nixos/modules/installer/cd-dvd/installation-cd-base.nix
@@ -34,6 +34,7 @@
   # system layout on a fresh machine, before it has been formatted.
   swapDevices = lib.mkImageMediaOverride [ ];
   fileSystems = lib.mkImageMediaOverride config.lib.isoFileSystems;
+  boot.initrd.luks.devices = lib.mkImageMediaOverride { };
 
   boot.postBootCommands = ''
     for o in $(</proc/cmdline); do