diff --git a/src/tlsdate-helper.c b/src/tlsdate-helper.c
index 02dac7a..7455d39 100644
--- a/src/tlsdate-helper.c
+++ b/src/tlsdate-helper.c
@@ -745,6 +745,7 @@
       SSL_set_info_callback (ssl, openssl_time_callback);
     }
   SSL_set_mode (ssl, SSL_MODE_AUTO_RETRY);
+  SSL_set_tlsext_host_name (ssl, host);
   verb ("V: opening socket to %s:%s\n", host, port);
   if ( (1 != BIO_set_conn_hostname (s_bio, host)) ||
        (1 != BIO_set_conn_port (s_bio, port)))