diff --git a/examples/ds18b20_broadcaster/ds18b20_broadcaster.c b/examples/ds18b20_broadcaster/ds18b20_broadcaster.c
index 92d340b..fe12055 100644
--- a/examples/ds18b20_broadcaster/ds18b20_broadcaster.c
+++ b/examples/ds18b20_broadcaster/ds18b20_broadcaster.c
@@ -1,3 +1,11 @@
+/*
+ * This is example of udp broadcaster.
+ * It grab data from ds18b20 sensor and emit result over wifi.
+ *
+ * Author Grzegorz Hetman : ghetman@gmail.com
+ * License public domain/CC0
+ */
+
 #include <string.h>
 
 #include "espressif/esp_common.h"