diff --git a/README.md b/README.md
index 668181e94..0ac9c4dab 100644
--- a/README.md
+++ b/README.md
@@ -38,7 +38,7 @@ After that simply run the below script. It doesn't require root privileges. In t
     cp ../syslinux-6.03/bios/core/isolinux.bin .
     cp ../syslinux-6.03/bios/com32/elflink/ldlinux/ldlinux.c32 .
     cp kernel ./kernel.xz
-    cp ../rootfs.cpio.xz ./rootfs.xz
+    cp ../rootfs.cpio.gz ./rootfs.xz
     echo 'default kernel.xz  initrd=rootfs.xz' > ./isolinux.cfg
     genisoimage \
     	-J \