diff --git a/src/modules/tls/tls_config.c b/src/modules/tls/tls_config.c
index 4134aeb7a44..4cec01b0b67 100644
--- a/src/modules/tls/tls_config.c
+++ b/src/modules/tls/tls_config.c
@@ -125,6 +125,8 @@ static cfg_option_t methods[] = {
 	{"TLSv1.1+", .val = TLS_USE_TLSv1_1_PLUS},
 	{"TLSv1.2",  .val = TLS_USE_TLSv1_2},
 	{"TLSv1.2+", .val = TLS_USE_TLSv1_2_PLUS},
+	{"TLSv1.3",  .val = TLS_USE_TLSv1_3},
+	{"TLSv1.3+", .val = TLS_USE_TLSv1_3_PLUS},
 	{0}
 };
 
@@ -528,6 +530,13 @@ int tls_parse_method(str* method)
 		return -1;
 	}
 #endif
+#if OPENSSL_VERSION_NUMBER < 0x1010100fL
+	if(opt->val == TLS_USE_TLSv1_3 || opt->val == TLS_USE_TLSv1_3_PLUS) {
+		LM_ERR("tls v1.3 not supported by this libssl version: %ld\n",
+				(long)OPENSSL_VERSION_NUMBER);
+		return -1;
+	}
+#endif
 
 	return opt->val;
 }