diff --git a/Documentation/NuttxPortingGuide.html b/Documentation/NuttxPortingGuide.html
index 0d3b978d0b..992548fafd 100644
--- a/Documentation/NuttxPortingGuide.html
+++ b/Documentation/NuttxPortingGuide.html
@@ -1643,7 +1643,10 @@ The system can be re-made subsequently by just typing <code>make</code>.
     <code>CONFIG_NET_ARPTAB_SIZE</code>: The size of the ARP table
   </li>
   <li>
-    <code>CONFIG_NET_BROADCAST</code>: Broadcast support
+    <code>CONFIG_NET_BROADCAST</code>: Incoming UDP broadcast support
+  </li>
+  <li>
+    <code>CONFIG_NET_MULTICAST</code>: Outgoing multi-cast address support
   </li>
   <li>
     <code>CONFIG_NET_LLH_LEN</code>: The link level header length