diff --git a/Lib/httplib.py b/Lib/httplib.py
index ccd4234..9853285 100644
--- a/Lib/httplib.py
+++ b/Lib/httplib.py
@@ -939,10 +939,10 @@
         """Indicate that the last header line has been sent to the server.
 
         This method sends the request to the server.  The optional
-        message_body argument can be used to pass message body
+        message_body argument can be used to pass a message body
         associated with the request.  The message body will be sent in
-        the same packet as the message headers if possible.  The
-        message_body should be a string.
+        the same packet as the message headers if it is string, otherwise it is
+        sent as a separate packet.
         """
         if self.__state == _CS_REQ_STARTED:
             self.__state = _CS_REQ_SENT