diff --git a/libraries/AP_HAL_ChibiOS/hwdef/fmuv5/hwdef-bl.dat b/libraries/AP_HAL_ChibiOS/hwdef/fmuv5/hwdef-bl.dat
index c21e687b51..cfd11f8b1c 100644
--- a/libraries/AP_HAL_ChibiOS/hwdef/fmuv5/hwdef-bl.dat
+++ b/libraries/AP_HAL_ChibiOS/hwdef/fmuv5/hwdef-bl.dat
@@ -18,6 +18,9 @@ define STM32_PLLQ_VALUE 9
 # board ID for firmware load
 APJ_BOARD_ID 50
 
+# USB setup
+USB_STRING_PRODUCT "fmuv5-BL"
+
 FLASH_SIZE_KB 2048
 
 # bootloader is installed at zero offset