diff --git a/Documentation/NuttxPortingGuide.html b/Documentation/NuttxPortingGuide.html
index 305a44ce21..6fe556c6cb 100644
--- a/Documentation/NuttxPortingGuide.html
+++ b/Documentation/NuttxPortingGuide.html
@@ -2388,7 +2388,7 @@ extern void up_ledoff(int led);
     to run before killing them.
   </li>
   <li>
-    <code>CONFIG_THTTPD_CHARSET- The default character set name to use with
+    <code>CONFIG_THTTPD_CHARSET</code>: The default character set name to use with
     text MIME types.
   </li>
   <li>