diff --git a/createsend/createsend.py b/createsend/createsend.py
index baa08ea..babb81a 100644
--- a/createsend/createsend.py
+++ b/createsend/createsend.py
@@ -5,6 +5,7 @@
 import httplib
 import base64
 import gzip
+import os
 import socket, ssl
 from StringIO import StringIO
 from urlparse import urlparse
@@ -160,7 +161,7 @@ def make_request(self, method, path, params={}, body="", username=None,
     if (parsed_base_uri.scheme == 'https'):
       sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
       sock.connect((parsed_base_uri.netloc, 443))
-      sslsock = ssl.wrap_socket(sock, cert_reqs=ssl.CERT_REQUIRED, ca_certs='cacert.pem')		
+      sslsock = ssl.wrap_socket(sock, cert_reqs=ssl.CERT_REQUIRED, ca_certs=os.path.dirname(__file__)+ '\cacert.pem')		
       cert = sslsock.getpeercert()
 
       for field in cert['subject']: