diff --git a/Multiprotocol/Multiprotocol.ino b/Multiprotocol/Multiprotocol.ino
index 1333b12..a37f716 100644
--- a/Multiprotocol/Multiprotocol.ino
+++ b/Multiprotocol/Multiprotocol.ino
@@ -23,7 +23,7 @@
 #include <avr/pgmspace.h>
 
 //#define DEBUG_PIN		// Use pin TX for AVR and SPI_CS for STM32 => DEBUG_PIN_on, DEBUG_PIN_off, DEBUG_PIN_toggle
-#define DEBUG_SERIAL	// Only for STM32_BOARD, compiled with Upload method "Serial"->usart1, "STM32duino bootloader"->USB serial
+//#define DEBUG_SERIAL	// Only for STM32_BOARD, compiled with Upload method "Serial"->usart1, "STM32duino bootloader"->USB serial
 
 #ifdef __arm__			// Let's automatically select the board if arm is selected
 	#define STM32_BOARD