diff --git a/defaults/initrd.scripts b/defaults/initrd.scripts
index 5a09a6e..c6de39a 100644
--- a/defaults/initrd.scripts
+++ b/defaults/initrd.scripts
@@ -1926,7 +1926,7 @@ fstype_init() {
 		# start BTRFS volume detection, if available
 		[ -x /sbin/btrfs ] && /sbin/btrfs device scan
 	elif [ -z "${fstype}" ]; then
-		warn_msg "Unable to detect the filesystem type of ${REAL_ROOT}"
+		warn_msg "Unable to detect the filesystem type (empty variable)"
 	fi
 }