diff --git a/root/bin/firstboot b/root/bin/firstboot
index 227cedb9e8..b8d66c18ae 100755
--- a/root/bin/firstboot
+++ b/root/bin/firstboot
@@ -3,6 +3,12 @@
 exec 2>/dev/null
 
 umount /jffs 
+mount | grep jffs2 && {
+	echo "firstboot has already been run"
+	echo "to run firstboot again you must boot failsafe"
+	exit
+}
+
 mtd erase OpenWrt
 mount -t jffs2 /dev/mtdblock/4 /jffs
 mount /dev/mtdblock/2 /rom -o ro