diff --git a/extras/dhcpserver/dhcpserver.c b/extras/dhcpserver/dhcpserver.c
index dde6a6f..1881e60 100644
--- a/extras/dhcpserver/dhcpserver.c
+++ b/extras/dhcpserver/dhcpserver.c
@@ -28,6 +28,12 @@
 #define debug(s, ...)
 #endif
 
+#if (DHCP_DEBUG == LWIP_DBG_ON)
+#define debug(s, ...) printf("%s: " s "\n", "DHCP", ## __VA_ARGS__)
+#else
+#define debug(s, ...)
+#endif
+
 /* Grow the size of the lwip dhcp_msg struct's options field, as LWIP
    defaults to a 68 octet options field for its DHCP client, and most
    full-sized clients send us more than this. */