diff --git a/libraries/AP_HAL_ChibiOS/hwdef/common/stm32h7_mcuconf.h b/libraries/AP_HAL_ChibiOS/hwdef/common/stm32h7_mcuconf.h
index 4a3c29226e..f30d6845dc 100644
--- a/libraries/AP_HAL_ChibiOS/hwdef/common/stm32h7_mcuconf.h
+++ b/libraries/AP_HAL_ChibiOS/hwdef/common/stm32h7_mcuconf.h
@@ -134,11 +134,11 @@
 #define STM32_SW                            STM32_SW_PLL1_P_CK
 #define STM32_RTCSEL                        STM32_RTCSEL_NOCLK
 #define STM32_D1CPRE                        STM32_D1CPRE_DIV1
-#define STM32_D1HPRE                        STM32_D1HPRE_DIV4
-#define STM32_D1PPRE3                       STM32_D1PPRE3_DIV1
-#define STM32_D2PPRE1                       STM32_D2PPRE1_DIV1
-#define STM32_D2PPRE2                       STM32_D2PPRE2_DIV1
-#define STM32_D3PPRE4                       STM32_D3PPRE4_DIV1
+#define STM32_D1HPRE                        STM32_D1HPRE_DIV2
+#define STM32_D1PPRE3                       STM32_D1PPRE3_DIV2
+#define STM32_D2PPRE1                       STM32_D2PPRE1_DIV2
+#define STM32_D2PPRE2                       STM32_D2PPRE2_DIV2
+#define STM32_D3PPRE4                       STM32_D3PPRE4_DIV2
 
 /*
  * Peripherals clocks static settings.