diff --git a/drivers/clock_control/clock_stm32_ll_u5.c b/drivers/clock_control/clock_stm32_ll_u5.c
index b1b56d976ce..e46bc57a4e7 100644
--- a/drivers/clock_control/clock_stm32_ll_u5.c
+++ b/drivers/clock_control/clock_stm32_ll_u5.c
@@ -393,9 +393,6 @@ void config_src_sysclk_hse(LL_UTILS_ClkInitTypeDef s_ClkInitStruct)
 	while (LL_RCC_GetSysClkSource() != LL_RCC_SYS_CLKSOURCE_STATUS_HSE) {
 	}
 
-	/* Update SystemCoreClock variable */
-	LL_SetSystemCoreClock(new_hclk_freq);
-
 	/* Set peripheral busses prescalers */
 	LL_RCC_SetAPB1Prescaler(s_ClkInitStruct.APB1CLKDivider);
 	LL_RCC_SetAPB2Prescaler(s_ClkInitStruct.APB2CLKDivider);
@@ -450,9 +447,6 @@ void config_src_sysclk_msis(LL_UTILS_ClkInitTypeDef s_ClkInitStruct)
 	while (LL_RCC_GetSysClkSource() != LL_RCC_SYS_CLKSOURCE_STATUS_MSIS) {
 	}
 
-	/* Update SystemCoreClock variable */
-	LL_SetSystemCoreClock(new_hclk_freq);
-
 	/* Set peripheral busses prescalers */
 	LL_RCC_SetAPB1Prescaler(s_ClkInitStruct.APB1CLKDivider);
 	LL_RCC_SetAPB2Prescaler(s_ClkInitStruct.APB2CLKDivider);
@@ -480,10 +474,6 @@ void config_src_sysclk_hsi(LL_UTILS_ClkInitTypeDef s_ClkInitStruct)
 
 	clock_switch_to_hsi(s_ClkInitStruct.AHBCLKDivider);
 
-	/* Update SystemCoreClock variable */
-	LL_SetSystemCoreClock(__LL_RCC_CALC_HCLK_FREQ(HSI_VALUE,
-						s_ClkInitStruct.AHBCLKDivider));
-
 	/* Set peripheral busses prescalers */
 	LL_RCC_SetAPB1Prescaler(s_ClkInitStruct.APB1CLKDivider);
 	LL_RCC_SetAPB2Prescaler(s_ClkInitStruct.APB2CLKDivider);
@@ -529,6 +519,9 @@ int stm32_clock_control_init(const struct device *dev)
 		return -ENOTSUP;
 	}
 
+	/* Update CMSIS variable */
+	SystemCoreClock = CONFIG_SYS_CLOCK_HW_CYCLES_PER_SEC;
+
 	return 0;
 }