diff --git a/Documentation/NuttxPortingGuide.html b/Documentation/NuttxPortingGuide.html
index b5473549ae0..06f2c3e6ff9 100644
--- a/Documentation/NuttxPortingGuide.html
+++ b/Documentation/NuttxPortingGuide.html
@@ -5098,9 +5098,6 @@ build
   <li>
     <code>CONFIG_NET_MULTICAST</code>: Outgoing multi-cast address support
   </li>
-  <li>
-    <code>CONFIG_NET_FWCACHE_SIZE</code>: number of packets to remember when looking for duplicates
-  </li>
 </ul>
 
 <h3><a name="slipdriver">SLIP</a></h3>
@@ -5803,10 +5800,6 @@ build
     <code>CONFIG_BOOT_RAMFUNCS</code>: Other configurations may copy just
     some functions into RAM, either for better performance or for errata workarounds.
   </li>
-  <li>
-    <code>CONFIG_STACK_POINTER</code>: The initial stack pointer (may not be supported
-    in all architectures).
-  </li>
   <li>
     <code>CONFIG_STACK_ALIGNMENT</code>: Set if the your application has specific
     stack alignment requirements (may not be supported in all architectures).