diff --git a/sleekxmpp/features/feature_mechanisms/mechanisms.py b/sleekxmpp/features/feature_mechanisms/mechanisms.py
index ca94bce1..f71a9c25 100644
--- a/sleekxmpp/features/feature_mechanisms/mechanisms.py
+++ b/sleekxmpp/features/feature_mechanisms/mechanisms.py
@@ -100,6 +100,9 @@ class FeatureMechanisms(BasePlugin):
                 if hasattr(self.xmpp.socket, 'get_channel_binding'):
                     result[value] = self.xmpp.socket.get_channel_binding()
                 else:
+                    log.debug("Channel binding not supported.")
+                    log.debug("Use Python 3.3+ for channel binding and " + \
+                              "SCRAM-SHA-1-PLUS support")
                     result[value] = None
             elif value == 'host':
                 result[value] = creds.get('host', self.xmpp.requested_jid.domain)