diff --git a/configs/shenzhou/nsh/defconfig b/configs/shenzhou/nsh/defconfig
index c4817c2ee0d..313f9f57be8 100644
--- a/configs/shenzhou/nsh/defconfig
+++ b/configs/shenzhou/nsh/defconfig
@@ -172,7 +172,7 @@ CONFIG_STM32_JTAG_FULL_ENABLE=y
 #
 # Ethernet MAC configuration
 #
-CONFIG_STM32_PHYADDR=1
+CONFIG_STM32_PHYADDR=0
 # CONFIG_STM32_MII is not set
 CONFIG_STM32_AUTONEG=y
 CONFIG_STM32_PHYSR=17