diff --git a/libraries/AP_HAL_F4Light/boards/f4light_MatekF405_CTR/board.h b/libraries/AP_HAL_F4Light/boards/f4light_MatekF405_CTR/board.h
index 46690ead7c..acee8a4827 100644
--- a/libraries/AP_HAL_F4Light/boards/f4light_MatekF405_CTR/board.h
+++ b/libraries/AP_HAL_F4Light/boards/f4light_MatekF405_CTR/board.h
@@ -113,6 +113,10 @@
 #define BOARD_BARO_DEFAULT              HAL_BARO_BMP280_I2C
 #define HAL_BARO_BMP280_BUS             BOARD_I2C_BUS_EXT
 #define HAL_BARO_BMP280_I2C_ADDR        (0x76)
+#define HAL_BARO_BMP280_I2C_ADDR_ALT    (0x77)
+
+#define HAL_BARO_MS5611_I2C_BUS         BOARD_I2C_BUS_EXT
+#define HAL_BARO_MS5611_I2C_ADDR        (0x77)
 
 #define BOARD_COMPASS_DEFAULT           HAL_COMPASS_HMC5843
 #define BOARD_COMPASS_HMC5843_I2C_ADDR  0x1E