diff --git a/flight/PiOS/STM32F10x/pios_usb_hid.c b/flight/PiOS/STM32F10x/pios_usb_hid.c
index ed34fb300..663c4dd4a 100644
--- a/flight/PiOS/STM32F10x/pios_usb_hid.c
+++ b/flight/PiOS/STM32F10x/pios_usb_hid.c
@@ -96,6 +96,7 @@ int32_t PIOS_USB_HID_Init(uint32_t mode)
 	/* Enable the USB Interrupts */
 	/* 2 bit for pre-emption priority, 2 bits for subpriority */
 	NVIC_InitTypeDef NVIC_InitStructure;
+	NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);
 	NVIC_InitStructure.NVIC_IRQChannel = USB_LP_CAN1_RX0_IRQn;
 	NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = PIOS_IRQ_PRIO_LOW;
 	NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;