diff --git a/ports/stm32f4/boards/stm32f412zg_discovery/mpconfigboard.mk b/ports/stm32f4/boards/stm32f412zg_discovery/mpconfigboard.mk
index e9ba938051..f35c1b9e02 100644
--- a/ports/stm32f4/boards/stm32f412zg_discovery/mpconfigboard.mk
+++ b/ports/stm32f4/boards/stm32f412zg_discovery/mpconfigboard.mk
@@ -3,7 +3,6 @@ USB_PID = 0x572B
 USB_PRODUCT = "STM32F412ZG Discovery Board - CPy"
 USB_MANUFACTURER = "STMicroelectronics"
 
-USB_DEVICES = "CDC,MSC"
 INTERNAL_FLASH_FILESYSTEM = 1
 LONGINT_IMPL = NONE