diff --git a/pcl_expect/pyserial.py b/pcl_expect/pyserial.py
index c5c009501f986f7ea9d82f334164396c77d51d75..fea60a86b8c6d3d0d9f90ab1d19ccdcdc085ae56 100644
--- a/pcl_expect/pyserial.py
+++ b/pcl_expect/pyserial.py
@@ -1,3 +1,10 @@
+"""Read input from a serial port using the pySerial module.
+
+   pySerial is available from http://pyserial.sourceforge.net/
+   This code has been tested with version 2.0b2 of pySerial.
+
+"""
+
 import serial
 
 import pcl_expect
@@ -9,8 +16,6 @@ __all__ = [
 class Serial(pcl_expect.Expectable):
     """Read input from a serial port using the pySerial module.
 
-       pySerial is available from http://pyserial.sourceforge.net/
-
        Once you have created a pcl_expect.Serial object, you can
        access the underlying serial.Serial object via the serial
        attribute.  However, this class will not work if the file