diff --git a/websocket/_http.py b/websocket/_http.py
index ba3d550..7da328e 100644
--- a/websocket/_http.py
+++ b/websocket/_http.py
@@ -134,7 +134,7 @@ def _wrap_sni_socket(sock, sslopt, hostname, check_hostname):
         context.set_ciphers(sslopt['ciphers'])
     if 'cert_chain' in sslopt :
         certfile,keyfile,password = sslopt['cert_chain']
-        context.load_cert_chain(certfile,keyfile,password)
+        context.load_cert_chain(certfile, keyfile, password)
 
     return context.wrap_socket(
         sock,