diff --git a/targets/TARGET_STM/TARGET_STM32H7/TARGET_STM32H745xI/system_stm32h7xx.c b/targets/TARGET_STM/TARGET_STM32H7/TARGET_STM32H745xI/system_stm32h7xx.c
index 17720f6ac1..3af62b6959 100644
--- a/targets/TARGET_STM/TARGET_STM32H7/TARGET_STM32H745xI/system_stm32h7xx.c
+++ b/targets/TARGET_STM/TARGET_STM32H7/TARGET_STM32H745xI/system_stm32h7xx.c
@@ -139,20 +139,6 @@ const  uint8_t D1CorePrescTable[16] = {0, 0, 0, 0, 1, 2, 3, 4, 1, 2, 3, 4, 6, 7,
   * @{
   */
 
-/**
- * @brief Setup the target board-specific configuration
- * of the microcontroller
- *
- * @note If used, this function should be implemented
- * elsewhere. This declaration is weak so it may be overridden
- * by user code.
- *
- * @param None
- * @retval None
- */
-__weak void TargetBSP_Init(void) {
-    /** Do nothing */
-}
 
 /**
   * @brief  Setup the microcontroller system
@@ -232,9 +218,6 @@ void SystemInit(void)
 
 #endif /* CORE_CM7*/
 
-    /* BSP initialization hook (external RAM, etc) */
-    TargetBSP_Init();
-
 #ifdef CORE_CM4
 
     /* Configure the Vector Table location add offset address ------------------*/
diff --git a/targets/TARGET_STM/mbed_overrides.c b/targets/TARGET_STM/mbed_overrides.c
index a006a7563c..f8c19b6991 100644
--- a/targets/TARGET_STM/mbed_overrides.c
+++ b/targets/TARGET_STM/mbed_overrides.c
@@ -31,6 +31,22 @@
 int mbed_sdk_inited = 0;
 extern void SetSysClock(void);
 
+/**
+ * @brief Setup the target board-specific configuration
+ * of the microcontroller
+ *
+ * @note If used, this function should be implemented
+ * elsewhere. This declaration is weak so it may be overridden
+ * by user code.
+ *
+ * @param None
+ * @retval None
+ */
+MBED_WEAK void TargetBSP_Init(void) {
+    /** Do nothing */
+}
+
+
 // This function is called after RAM initialization and before main.
 void mbed_sdk_init()
 {
@@ -150,5 +166,8 @@ void mbed_sdk_init()
 #endif /* ! MBED_CONF_TARGET_LSE_AVAILABLE */
 #endif /* DEVICE_RTC */
 
+    /* BSP initialization hook (external RAM, etc) */
+    TargetBSP_Init();
+
     mbed_sdk_inited = 1;
 }