diff --git a/websocket/_http.py b/websocket/_http.py
index dffedc7..64b7d59 100644
--- a/websocket/_http.py
+++ b/websocket/_http.py
@@ -117,13 +117,13 @@ def _open_socket(addrinfo_list, sockopt, timeout):
     return sock
 
 
-def _ssl_socket(sock, sslopt, hostname):
+def _ssl_socket(sock, user_sslopt, hostname):
     sslopt = dict(cert_reqs=ssl.CERT_REQUIRED)
     certPath = os.path.join(
         os.path.dirname(__file__), "cacert.pem")
     if os.path.isfile(certPath):
         sslopt['ca_certs'] = certPath
-    sslopt.update(sslopt)
+    sslopt.update(user_sslopt)
     check_hostname = sslopt.pop('check_hostname', True)
     sock = ssl.wrap_socket(sock, **sslopt)
     if (sslopt["cert_reqs"] != ssl.CERT_NONE and check_hostname):