diff --git a/fbchat/__init__.py b/fbchat/__init__.py
index 5316c78..6c73aee 100644
--- a/fbchat/__init__.py
+++ b/fbchat/__init__.py
@@ -15,7 +15,7 @@ from .client import *
 
 
 __copyright__ = 'Copyright 2015 by Taehoon Kim'
-__version__ = '0.3.1'
+__version__ = '0.4.0'
 __license__ = 'BSD'
 __author__ = 'Taehoon Kim; Moreels Pieter-Jan'
 __email__ = 'carpedm20@gmail.com'
diff --git a/fbchat/client.py b/fbchat/client.py
index 6576f87..b11c5d8 100644
--- a/fbchat/client.py
+++ b/fbchat/client.py
@@ -449,9 +449,9 @@ class Client(object):
                     fbid =    m['delta']['messageMetadata']['threadKey']['otherUserFbId']
                     name =    None
                     self.on_message(mid, fbid, name, message, m)
-
                 else:
-                    print(m)
+                    if self.debug:
+                        print(m)
             except Exception as e:
                 self.on_message_error(e, m)