diff --git a/README.rst b/README.rst
index 816e6a02..87b5249f 100644
--- a/README.rst
+++ b/README.rst
@@ -61,7 +61,7 @@ Getting last messages sent
 
 .. code-block:: python
     
-    last_messages = client.getThreadInfo(friend.uid,0)
+    last_messages = client.getThreadInfo(friend.uid, last_n=20)
     last_messages.reverse()  # messages come in reversed order
     
     for message in last_messages:
diff --git a/fbchat/client.py b/fbchat/client.py
index 0595db34..8d110694 100644
--- a/fbchat/client.py
+++ b/fbchat/client.py
@@ -616,7 +616,7 @@ def getThreadInfo(self, userID, last_n=20, start=None, is_user=True):
         # `start` doesn't matter, always returns from the last
         # data['messages[{}][{}][offset]'.format(key, userID)] = start
         data = {'messages[{}][{}][offset]'.format(key, userID): 0,
-                'messages[{}][{}][limit]'.format(key, userID): last_n,
+                'messages[{}][{}][limit]'.format(key, userID): last_n - 1,
                 'messages[{}][{}][timestamp]'.format(key, userID): now()}
 
         r = self._post(MessagesURL, query=data)