diff --git a/Documentation/NuttxPortingGuide.html b/Documentation/NuttxPortingGuide.html
index c164f5a54bf..4c07bbba761 100644
--- a/Documentation/NuttxPortingGuide.html
+++ b/Documentation/NuttxPortingGuide.html
@@ -1510,8 +1510,8 @@ The system can be re-made subsequently by just typing <code>make</code>.
     watchdog structures to minimize dynamic allocations
   </li>
   <li>
-    <code>CONFIG_DEV_FIFO_SIZE</code>: Size, in bytes, of the buffer to allocated
-    for FIFO support (default is 1024).
+    <code>CONFIG_DEV_PIPE_SIZE</code>: Size, in bytes, of the buffer to allocated
+    for pipe and FIFO support (default is 1024).
   </li>
 </ul>