diff --git a/include/configs/stamp9g20.h b/include/configs/stamp9g20.h
index 248e657..51339b1 100644
--- a/include/configs/stamp9g20.h
+++ b/include/configs/stamp9g20.h
@@ -145,6 +145,7 @@
 #ifdef CONFIG_MACB
 # define CONFIG_RMII			/* use reduced MII inteface */
 # define CONFIG_NET_RETRY_COUNT	20      /* # of DHCP/BOOTP retries */
+#define CONFIG_AT91_WANTS_COMMON_PHY
 
 /* BOOTP and DHCP options */
 # define CONFIG_BOOTP_BOOTFILESIZE