diff --git a/test/TEST-40-NBD/create-root.sh b/test/TEST-40-NBD/create-root.sh
index f45898e6..b9fe9689 100755
--- a/test/TEST-40-NBD/create-root.sh
+++ b/test/TEST-40-NBD/create-root.sh
@@ -3,6 +3,7 @@
 for x in 64-lvm.rules 70-mdadm.rules 99-mount-rules; do
     > "/etc/udev/rules.d/$x"
 done
+rm /etc/lvm/lvm.conf
 udevadm control --reload-rules
 echo -n test >keyfile
 cryptsetup -q luksFormat /dev/sdb /keyfile