diff --git a/src/core/ipv4/dhcp.c b/src/core/ipv4/dhcp.c
index 778965cf..b8ee5c24 100644
--- a/src/core/ipv4/dhcp.c
+++ b/src/core/ipv4/dhcp.c
@@ -88,7 +88,7 @@
 #define LWIP_HOOK_DHCP_APPEND_OPTIONS(netif, dhcp, state, msg, msg_type, options_len_ptr)
 #endif
 #ifndef LWIP_HOOK_DHCP_PARSE_OPTION
-#define LWIP_HOOK_DHCP_PARSE_OPTION(netif, dhcp, state, msg, msg_type, option, len, pbuf, offset)
+#define LWIP_HOOK_DHCP_PARSE_OPTION(netif, dhcp, state, msg, msg_type, option, len, pbuf, offset) do { LWIP_UNUSED_ARG(msg); } while(0)
 #endif
 
 /** DHCP_CREATE_RAND_XID: if this is set to 1, the xid is created using