diff --git a/Core/Src/stm32_lpm_if.c b/Core/Src/stm32_lpm_if.c
index 39d5259..bae3ed2 100644
--- a/Core/Src/stm32_lpm_if.c
+++ b/Core/Src/stm32_lpm_if.c
@@ -81,9 +81,6 @@ const struct UTIL_LPM_Driver_s UTIL_PowerDriver =
 void PWR_EnterOffMode(void)
 {
   /* USER CODE BEGIN EnterOffMode_1 */
-	HAL_GPIO_WritePin(GPIOB,GPIO_PIN_All, GPIO_PIN_RESET); //HAL_GPIO_DeInit(GPIOB,GPIO_PIN_All);
-	HAL_GPIO_WritePin(GPIOC,GPIO_PIN_All, GPIO_PIN_RESET); //HAL_GPIO_DeInit(GPIOC,GPIO_PIN_All);
-
 	HAL_SuspendTick();
 	  /* Enable WakeUp Pin PWR_WAKEUP_PIN1 connected to PA0 */
 	  HAL_PWR_EnableWakeUpPin(PWR_WAKEUP_PIN1_LOW);
@@ -91,6 +88,8 @@ void PWR_EnterOffMode(void)
 	  /* Clear all related wakeup flags*/
 	  __HAL_PWR_CLEAR_FLAG(PWR_FLAG_WUF1);
 
+	  HAL_UART_DeInit(&huart2);
+
 	  /* Enter the Standby mode */
 	  HAL_PWR_EnterSTANDBYMode();
   /* USER CODE END EnterOffMode_1 */
diff --git a/Core/Src/usart_if.c b/Core/Src/usart_if.c
index 8b3d880..2ad35e0 100644
--- a/Core/Src/usart_if.c
+++ b/Core/Src/usart_if.c
@@ -128,7 +128,7 @@ UTIL_ADV_TRACE_Status_t vcom_DeInit(void)
 
   /* ##-3- Disable the NVIC for DMA ########################################### */
   /* USER CODE BEGIN 1 */
-  HAL_NVIC_DisableIRQ(DMA1_Channel5_IRQn);
+  HAL_NVIC_DisableIRQ(DMA1_Channel7_IRQn);
 
   return UTIL_ADV_TRACE_OK;
   /* USER CODE END 1 */