diff --git a/soc/arm/st_stm32/stm32h7/soc_m7.c b/soc/arm/st_stm32/stm32h7/soc_m7.c
index 7088ab48048..3486473fb35 100644
--- a/soc/arm/st_stm32/stm32h7/soc_m7.c
+++ b/soc/arm/st_stm32/stm32h7/soc_m7.c
@@ -88,6 +88,8 @@ static int stm32h7_init(struct device *arg)
 	/* Power Configuration */
 #ifdef SMPS
 	LL_PWR_ConfigSupply(LL_PWR_DIRECT_SMPS_SUPPLY);
+#else
+	LL_PWR_ConfigSupply(LL_PWR_LDO_SUPPLY);
 #endif
 	LL_PWR_SetRegulVoltageScaling(LL_PWR_REGU_VOLTAGE_SCALE1);
 	while (LL_PWR_IsActiveFlag_VOS() == 0) {