diff --git a/io/serialport/locales/en-US/25-serial.html b/io/serialport/locales/en-US/25-serial.html
index 0d9b702a..45ef630b 100644
--- a/io/serialport/locales/en-US/25-serial.html
+++ b/io/serialport/locales/en-US/25-serial.html
@@ -124,7 +124,7 @@
                     "stopbits": 1
                 } 
             }      
-                </code> changes the serial port and the configuration on the fly. the <code>newport</code> is the mandatory field.
+                </code> changes the serial port and the configuration on the fly. the <code>newport</code> is the mandatory field, and other fields are optional. All of <code>serial-port</code> node specified parameters can be passed to change.
             </li>
             
             <li>