diff --git a/board/cmc_pu2/load_sernum_ethaddr.c b/board/cmc_pu2/load_sernum_ethaddr.c
index f02406c1aff78ed7b2edc4489f0481183b2d38dc..6f85dd95b3879d3ba5c2ef70f540f29e9646f1a6 100644
--- a/board/cmc_pu2/load_sernum_ethaddr.c
+++ b/board/cmc_pu2/load_sernum_ethaddr.c
@@ -27,6 +27,7 @@
 /* #define DEBUG */
 
 #include <common.h>
+#include <net.h>
 
 #define I2C_CHIP	0x50	/* I2C bus address of onboard EEPROM */
 #define I2C_ALEN	1	/* length of EEPROM addresses in bytes */