diff --git a/features/net/FEATURE_IPV4/lwip-interface/eth_arch.h b/features/net/FEATURE_IPV4/lwip-interface/eth_arch.h
index 667d2543f5..5e63831adc 100644
--- a/features/net/FEATURE_IPV4/lwip-interface/eth_arch.h
+++ b/features/net/FEATURE_IPV4/lwip-interface/eth_arch.h
@@ -37,6 +37,7 @@ void emac_lwip_disable_interrupts(void);
 #else /* DEVICE_EMAC */
 void eth_arch_enable_interrupts(void);
 void eth_arch_disable_interrupts(void);
+#endif
 
 #if DEVICE_EMAC
 err_t emac_lwip_if_init(struct netif *netif);
@@ -49,4 +50,3 @@ err_t eth_arch_enetif_init(struct netif *netif);
 #endif
 
 #endif // #ifndef ETHARCHINTERFACE_H_
-