diff --git a/ESP-IDF_Robot/main/blink_example_main.c b/ESP-IDF_Robot/main/blink_example_main.c
index 31da7c293..55718cbad 100644
--- a/ESP-IDF_Robot/main/blink_example_main.c
+++ b/ESP-IDF_Robot/main/blink_example_main.c
@@ -7,7 +7,7 @@
     Updated:    Jan 10, 2025
                 Jun 26, 2025
                 Jul 26, 2025 (ESP-IDF + MQTT + WiFi)
-                Aug 6 , 2025
+                Aug 6 , 2025 C
 
     built-in LED GPIO:          10
     build-in push button GPIO:  3