diff --git a/recipes-core/initrdscripts/initramfs-framework/nbdrootfs b/recipes-core/initrdscripts/initramfs-framework/nbdrootfs
index 4d846a9c..185b2ecc 100644
--- a/recipes-core/initrdscripts/initramfs-framework/nbdrootfs
+++ b/recipes-core/initrdscripts/initramfs-framework/nbdrootfs
@@ -1,7 +1,7 @@
 #!/bin/sh
 
 nbdrootfs_enabled() {
-	if [ ${bootparam_root} != "/dev/nbd0" ] || [ -z ${bootparam_nbdroot} ]; then
+	if [ -z ${bootparam_root} ] || [ ${bootparam_root} != "/dev/nbd0" ] || [ -z ${bootparam_nbdroot} ]; then
 		return 1
 	fi
 	return 0