diff --git a/libraries/AP_HAL_PX4/HAL_PX4_Class.cpp b/libraries/AP_HAL_PX4/HAL_PX4_Class.cpp
index ee3622f56f..0c904966de 100644
--- a/libraries/AP_HAL_PX4/HAL_PX4_Class.cpp
+++ b/libraries/AP_HAL_PX4/HAL_PX4_Class.cpp
@@ -76,6 +76,13 @@ static PX4::SPIDeviceManager spi_mgr_instance;
 #define UARTD_DEFAULT_DEVICE "/dev/null"
 #define UARTE_DEFAULT_DEVICE "/dev/null"
 #define UARTF_DEFAULT_DEVICE "/dev/null"
+#elif defined(CONFIG_ARCH_BOARD_PX4FMU_V1)
+#define UARTA_DEFAULT_DEVICE "/dev/ttyACM0"
+#define UARTB_DEFAULT_DEVICE "/dev/ttyS3"
+#define UARTC_DEFAULT_DEVICE "/dev/ttyS2"
+#define UARTD_DEFAULT_DEVICE "/dev/ttyS1"
+#define UARTE_DEFAULT_DEVICE "/dev/null"
+#define UARTF_DEFAULT_DEVICE "/dev/null"
 #else
 #define UARTA_DEFAULT_DEVICE "/dev/ttyACM0"
 #define UARTB_DEFAULT_DEVICE "/dev/ttyS3"