diff --git a/src/drivers/boards/px4fmu-v2/board_config.h b/src/drivers/boards/px4fmu-v2/board_config.h
index 96a2fa59ee..38f38bfb92 100644
--- a/src/drivers/boards/px4fmu-v2/board_config.h
+++ b/src/drivers/boards/px4fmu-v2/board_config.h
@@ -54,7 +54,7 @@
 #define HW_VER_PB12            (GPIO_INPUT|GPIO_PULLUP|GPIO_PORTB|GPIO_PIN12)
 #define HW_VER_PA8_INIT        (GPIO_VDD_5V_PERIPH_EN)
 #define HW_VER_PB4_INIT        (GPIO_SPI1_EXTI_DRDY_PB4)
-#define HW_VER_PB12_INIT       (GPIO_INPUT|GPIO_FLOAT|GPIO_PORTB|GPIO_PIN12)
+#define HW_VER_PB12_INIT       (GPIO_CAN2_RX | GPIO_PULLUP) /* Assume V2 needing pull up */
 #define HW_VER_FMUV2_STATE     0x8 /* PB12:PU:1 PB12:PD:0 PB4:PU:0 PB4PD:0 */
 #define HW_VER_FMUV3_STATE     0xE /* PB12:PU:1 PB12:PD:1 PB4:PU:1 PB4PD:0 */
 #define HW_VER_FMUV2MINI_STATE 0xA /* PB12:PU:1 PB12:PD:0 PB4:PU:1 PB4PD:0 */