diff --git a/src/BLEHIDDevice.h b/src/BLEHIDDevice.h
index 33e6b46..43c5b8e 100644
--- a/src/BLEHIDDevice.h
+++ b/src/BLEHIDDevice.h
@@ -26,6 +26,7 @@
 #define HID_CARD_READER	0x03C6
 #define HID_DIGITAL_PEN	0x03C7
 #define HID_BARCODE		0x03C8
+# define  HID_BRAILLE_DISPLAY 		0x03C9
 
 class BLEHIDDevice {
 public: