diff --git a/docker/docker-6.ks b/docker/docker-6.ks
index d71e81d..d6eecb6 100644
--- a/docker/docker-6.ks
+++ b/docker/docker-6.ks
@@ -66,7 +66,7 @@ reboot
 
 %post
 # randomize root password and lock root account
-tr -cd '[:alnum:]' < /dev/urandom | fold -w30 | head -n1 | passwd --stdin root
+dd if=/dev/urandom count=50 | md5sum | passwd --stdin root
 passwd -l root
 
 # cleanup unwanted stuff