diff --git a/features/net/FEATURE_IPV4/lwip-interface/eth_arch.h b/features/net/FEATURE_IPV4/lwip-interface/eth_arch.h
index 8688233ee1..667d2543f5 100644
--- a/features/net/FEATURE_IPV4/lwip-interface/eth_arch.h
+++ b/features/net/FEATURE_IPV4/lwip-interface/eth_arch.h
@@ -39,7 +39,7 @@ void eth_arch_enable_interrupts(void);
 void eth_arch_disable_interrupts(void);
 
 #if DEVICE_EMAC
-err_t emac_lwip_if_init(struct netif *netif)
+err_t emac_lwip_if_init(struct netif *netif);
 #else /* DEVICE_EMAC */
 err_t eth_arch_enetif_init(struct netif *netif);
 #endif /* DEVICE_MAC */