diff --git a/Documentation/NuttxPortingGuide.html b/Documentation/NuttxPortingGuide.html
index 6aa11bc789b..9fda53426cc 100644
--- a/Documentation/NuttxPortingGuide.html
+++ b/Documentation/NuttxPortingGuide.html
@@ -4778,7 +4778,7 @@ build
     <code>CONFIG_CDCSER</code>:  Enable compilation of the USB serial driver
   </li>
   <li>
-    <code>CONFIG_CDCSER_EP0MAXPACKET</code>:  Endpoint 0 max packet size. Default 8.
+    <code>CONFIG_CDCSER_EP0MAXPACKET</code>:  Endpoint 0 max packet size. Default 64.
   </li>
   <li>
     <code>CONFIG_CDCSER_EPINTIN</code>:  The logical 7-bit address of a hardware endpoint that supports
@@ -4788,7 +4788,7 @@ build
     <code>CONFIG_CDCSER_EPINTIN_FSSIZE</code>:  Max package size for the interrupt IN endpoint if full speed mode. Default 64.
   </li>
   <li>
-    <code>CONFIG_CDCSER_EPINTIN_HSSIZE</code>:  Max package size for the interrupt IN endpoint if high speed mode. Default 512.
+    <code>CONFIG_CDCSER_EPINTIN_HSSIZE</code>:  Max package size for the interrupt IN endpoint if high speed mode. Default 64.
   </li>
   <li>
     <code>CONFIG_CDCSER_EPBULKOUT</code>:  The logical 7-bit address of a hardware endpoint that supports