diff --git a/tncc.py b/tncc.py
index 99d0fa9..a953a6b 100755
--- a/tncc.py
+++ b/tncc.py
@@ -11,7 +11,8 @@ import collections
 import zlib
 import HTMLParser
 
-ssl._create_default_https_context = ssl._create_unverified_context
+if hasattr(ssl, '_create_unverified_context'):
+    ssl._create_default_https_context = ssl._create_unverified_context
 
 # 0013 - Message
 def decode_0013(buf):