diff --git a/nixos/modules/installer/cd-dvd/iso-image.nix b/nixos/modules/installer/cd-dvd/iso-image.nix
index 87e8fabe273..4fa2a2f6d52 100644
--- a/nixos/modules/installer/cd-dvd/iso-image.nix
+++ b/nixos/modules/installer/cd-dvd/iso-image.nix
@@ -73,6 +73,7 @@ let
       #Let's hope 15M is enough
       dd bs=2048 count=7680 if=/dev/zero of="$out"
       ${pkgs.dosfstools}/sbin/mkfs.vfat "$out"
+      mlabel -i "$out" ::EFIBOOT
       mcopy -svi "$out" ${efiDir}/* ::
       mmd -i "$out" boot
       mcopy -v -i "$out" \