diff --git a/Core/Src/stm32_lpm_if.c b/Core/Src/stm32_lpm_if.c
index a04384d..29e070b 100644
--- a/Core/Src/stm32_lpm_if.c
+++ b/Core/Src/stm32_lpm_if.c
@@ -84,8 +84,10 @@ void PWR_EnterOffMode(void)
 	//HAL_GPIO_WritePin(GPIOB, GPIO_PIN_2, GPIO_PIN_RESET); /* LED OFF */
 	  HAL_SuspendTick();
 	  HAL_UART_DeInit(&huart2);
-	  LL_PWR_ClearFlag_WU();
+	  //LL_PWR_ClearFlag_WU();
 	  __HAL_PWR_CLEAR_FLAG(PWR_FLAG_SB);
+	  __HAL_PWR_CLEAR_FLAG(PWR_FLAG_WU);
+	  //LL_PWR_ClearFlag_WU();
 	  HAL_PWR_EnterSTANDBYMode();
 #endif