diff --git a/socketIO_client/transports.py b/socketIO_client/transports.py
index 0cfe6c6..3b77485 100644
--- a/socketIO_client/transports.py
+++ b/socketIO_client/transports.py
@@ -4,12 +4,19 @@ import re
 import requests
 import six
 import socket
+import sys
 import time
 import websocket
 
 from .exceptions import SocketIOError, ConnectionError, TimeoutError
 
 
+if not hasattr(websocket, 'create_connection'):
+    sys.exit("""Incompatible websocket implementation
+- Please make sure that you have websocket-client installed
+- Please remove other websocket implementations""")
+
+
 TRANSPORTS = 'websocket', 'xhr-polling', 'jsonp-polling'
 BOUNDARY = six.u('\ufffd')
 TIMEOUT_IN_SECONDS = 3