diff --git a/plugins/check_smtp.c b/plugins/check_smtp.c
index 19e2a58f..e1f2842e 100644
--- a/plugins/check_smtp.c
+++ b/plugins/check_smtp.c
@@ -187,6 +187,9 @@ int main(int argc, char **argv) {
 		my_tcp_connect(config.server_address, config.server_port, &socket_descriptor);
 
 	mp_check overall = mp_check_init();
+
+	mp_set_ok_summary(&overall, "SMTP connection check is OK");
+
 	mp_subcheck sc_tcp_connect = mp_subcheck_init();
 	char buffer[MAX_INPUT_BUFFER];
 	bool ssl_established = false;