--- ./src/tcp-server-tls.c	2016-09-15 08:49:20.172000884 +0200
+++ ./src/tcp-server-tls.c	2017-01-26 07:21:10.063599311 +0100
@@ -484,16 +484,9 @@
         int ret;
         const char *err;
 
-#if defined LIBGNUTLS_VERSION_MAJOR && LIBGNUTLS_VERSION_MAJOR >= 3
-# define TLS_DH_STR "+ANON-ECDH:+ANON-DH"
-#else
-# define TLS_DH_STR "+ANON-DH"
-#endif
-        const char *pstring = "NORMAL:" TLS_DH_STR;
-
         gnutls_set_default_priority(session);
 
-        ret = gnutls_priority_set_direct(session, pstring, &err);
+        ret = gnutls_priority_set_direct(session, "@SYSTEM", &err);
         if (ret < 0) {
                 fprintf(stderr, "TLS priority syntax error at: %s\n", err);
                 return ret;