diff --git a/etc/init/udev.conf b/etc/init/udev.conf
index ee68df9..626ad0c 100644
--- a/etc/init/udev.conf
+++ b/etc/init/udev.conf
@@ -18,8 +18,10 @@ pre-start script
 	if [ ! -d /dev ]; then
 		mkdir /dev
 	fi
-	mount -n -t tmpfs -o mode=0755 udev /dev &&
-	status_message "udev: tmpfs on /dev created"
+	if [ ! -c /dev/zero ]; then
+		mount -n -t tmpfs -o mode=0755 udev /dev &&
+		status_message "udev: tmpfs on /dev created"
+	fi
 	test -d /lib/udev/devices &&
 	cp --preserve=all --recursive --remove-destination /lib/udev/devices/* /dev &&
 	status_message "udev: Static entries copied..."