diff --git a/bsps/arm/stm32f4/include/bsp/stm32f4xxxx_rcc.h b/bsps/arm/stm32f4/include/bsp/stm32f4xxxx_rcc.h
index 97867f84a3..09a31ad9b7 100644
--- a/bsps/arm/stm32f4/include/bsp/stm32f4xxxx_rcc.h
+++ b/bsps/arm/stm32f4/include/bsp/stm32f4xxxx_rcc.h
@@ -128,7 +128,7 @@ typedef struct {
 #define STM32F4_RCC_CFGR_PPRE1_DIV4   STM32F4_RCC_CFGR_PPRE1(5)
 #define STM32F4_RCC_CFGR_PPRE1_DIV8   STM32F4_RCC_CFGR_PPRE1(6)
 #define STM32F4_RCC_CFGR_PPRE1_DIV16  STM32F4_RCC_CFGR_PPRE1(7)
-#define STM32F4_RCC_CFGR_HPRE(val)  BSP_FLD32(val, 4, 15) // AHB prescalar
+#define STM32F4_RCC_CFGR_HPRE(val)  BSP_FLD32(val, 4, 7) // AHB prescalar
 #define STM32F4_RCC_CFGR_HPRE_GET(reg)  BSP_FLD32GET(reg, 4, 7)
 #define STM32F4_RCC_CFGR_HPRE_SET(reg, val) BSP_FLD32SET(reg, val, 4, 7)
 #define STM32F4_RCC_CFGR_HPRE_DIV1    STM32F4_RCC_CFGR_HPRE(0)