diff --git a/drivers/hwinfo/hwinfo_stm32.c b/drivers/hwinfo/hwinfo_stm32.c
index 239e54972f7..1cd9688acc1 100644
--- a/drivers/hwinfo/hwinfo_stm32.c
+++ b/drivers/hwinfo/hwinfo_stm32.c
@@ -175,6 +175,8 @@ int z_impl_hwinfo_clear_reset_cause(void)
 	LL_PWR_ClearFlag_MCU();
 #elif defined(CONFIG_SOC_SERIES_STM32WLX) || defined(CONFIG_SOC_SERIES_STM32WBX)
 	LL_PWR_ClearFlag_C1STOP_C1STB();
+#elif defined(CONFIG_SOC_SERIES_STM32U0X) && defined(PWR_FLAG_SB)
+	LL_PWR_ClearFlag_CSB();
 #elif defined(PWR_FLAG_SB)
 	LL_PWR_ClearFlag_SB();
 #endif /* PWR_FLAG_SB */