diff --git a/nixos/lib/make-iso9660-image.sh b/nixos/lib/make-iso9660-image.sh
index b7b1ab52a63..d4633d2c8d1 100644
--- a/nixos/lib/make-iso9660-image.sh
+++ b/nixos/lib/make-iso9660-image.sh
@@ -107,6 +107,7 @@ xorriso="xorriso
  -publisher nixos
  -graft-points
  -full-iso9660-filenames
+ -joliet
  ${isoBootFlags}
  ${usbBootFlags}
  ${efiBootFlags}