diff --git a/libraries/AP_HAL_ChibiOS/hwdef/NucleoH743/hwdef-bl.dat b/libraries/AP_HAL_ChibiOS/hwdef/NucleoH743/hwdef-bl.dat
index 9565856b76..5eddd24b92 100644
--- a/libraries/AP_HAL_ChibiOS/hwdef/NucleoH743/hwdef-bl.dat
+++ b/libraries/AP_HAL_ChibiOS/hwdef/NucleoH743/hwdef-bl.dat
@@ -7,8 +7,6 @@ MCU STM32H7xx STM32H743xx
 # crystal frequency
 OSCILLATOR_HZ 8000000
 
-define STM32_HSE_BYPASS
-
 # board ID for firmware load
 APJ_BOARD_ID 139
 
diff --git a/libraries/AP_HAL_ChibiOS/hwdef/NucleoH743/hwdef.dat b/libraries/AP_HAL_ChibiOS/hwdef/NucleoH743/hwdef.dat
index af815178f0..4f6838ff7e 100644
--- a/libraries/AP_HAL_ChibiOS/hwdef/NucleoH743/hwdef.dat
+++ b/libraries/AP_HAL_ChibiOS/hwdef/NucleoH743/hwdef.dat
@@ -7,8 +7,6 @@ MCU STM32H7xx STM32H743xx
 # crystal frequency
 OSCILLATOR_HZ 8000000
 
-define STM32_HSE_BYPASS
-
 # board ID for firmware load
 APJ_BOARD_ID 139