diff --git a/src/core/probe.c b/src/core/probe.c
index 8a480de..591a358 100644
--- a/src/core/probe.c
+++ b/src/core/probe.c
@@ -46,6 +46,13 @@ static void probe_net_event(struct net_connection* con, int events, void *arg)
 			if (memcmp(probe_recvbuf, "HSUP", 4) == 0)
 			{
 				LOG_TRACE("Probed ADC");
+#ifdef SSL_SUPPORT
+				if (probe->hub->config->tls_enable && probe->hub->config->tls_require)
+				{
+					LOG_TRACE("Not TLS connection - closing connection.");
+				}
+				else
+#endif
 				if (user_create(probe->hub, probe->connection, &probe->addr))
 				{
 					probe->connection = 0;