diff --git a/src/http/modules/ngx_http_proxy_module.c b/src/http/modules/ngx_http_proxy_module.c
index 9083ee8..63ee8fd 100644
--- a/src/http/modules/ngx_http_proxy_module.c
+++ b/src/http/modules/ngx_http_proxy_module.c
@@ -2130,7 +2130,7 @@
         plcf->upstream.ssl->log = cf->log;
 
         if (ngx_ssl_create(plcf->upstream.ssl,
-                           NGX_SSL_SSLv2|NGX_SSL_SSLv3|NGX_SSL_TLSv1)
+                           NGX_SSL_SSLv2|NGX_SSL_SSLv3|NGX_SSL_TLSv1, NULL)
             != NGX_OK)
         {
             return NGX_CONF_ERROR;