diff --git a/Core/Src/main.c b/Core/Src/main.c
index 8498dbf..e176d13 100644
--- a/Core/Src/main.c
+++ b/Core/Src/main.c
@@ -102,19 +102,20 @@ int main(void)
   /* Initialize all configured peripherals */
   MX_GPIO_Init();
 
-  if(__HAL_PWR_GET_FLAG(PWR_FLAG_SB) != RESET)
+  MX_I2C2_Init();
+  MX_DMA_Init();
+  if(__HAL_PWR_GET_FLAG(PWR_FLAG_SB) == RESET)
   {
-	  __HAL_PWR_CLEAR_FLAG(PWR_FLAG_SB);
-	  printf("\n***** PWR_FLAG_SB \n\r");
-  }
-  else
-  {
-#ifndef STS_R4
-	  MX_I2C2_Init();
-	  MX_DMA_Init();
-#endif
 
       MX_LoRaWAN_Init();
+  } else
+  {
+	  __HAL_PWR_CLEAR_FLAG(PWR_FLAG_SB);
+
+	      /* Enable access to RTC domain for following wake-up source configuration */
+	      //HAL_PWR_EnableBkUpAccess();
+	      //__HAL_RCC_RTCAPB_CLK_ENABLE();
+
   }
 
   /* USER CODE BEGIN 2 */
@@ -176,7 +177,7 @@ void SystemClock_Config(void)
   RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
   RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
   RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
-  //RCC_ClkInitStruct.AHBCLK3Divider = RCC_SYSCLK_DIV1;
+  RCC_ClkInitStruct.AHBCLK3Divider = RCC_SYSCLK_DIV1;
 
   if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
   {