diff --git a/board/orangepione/overlay/etc/init.d/boardsn b/board/orangepione/overlay/etc/init.d/boardsn
index 34ca56a576..16881c26f7 100755
--- a/board/orangepione/overlay/etc/init.d/boardsn
+++ b/board/orangepione/overlay/etc/init.d/boardsn
@@ -1,5 +1,5 @@
 #!/bin/bash
 
-sn=$(cat /sys/class/net/eth0/address 2>/dev/null | tr -d ':')
+sn=$(cat /proc/cpuinfo | grep Serial | tr -d ' ' | cut -d ':' -f 2)
 echo ${sn: -8}