diff --git a/libraries/SrcWrapper/src/stm32/clock.c b/libraries/SrcWrapper/src/stm32/clock.c
index 2f6c7c8a1d..543df9583f 100644
--- a/libraries/SrcWrapper/src/stm32/clock.c
+++ b/libraries/SrcWrapper/src/stm32/clock.c
@@ -129,10 +129,15 @@ void enableClock(sourceClock_t source)
       }
       break;
     case HSE_CLOCK:
-      __HAL_RCC_HSE_CONFIG(RCC_HSE_ON);
+#if defined(RCC_HSE_BYPASS_PWR) && defined(LORAWAN_BOARD_HAS_TCXO) && (LORAWAN_BOARD_HAS_TCXO == 1)
+      uint32_t HSEState = RCC_HSE_BYPASS_PWR;
+#else
+      uint32_t HSEState = RCC_HSE_ON;
+#endif
+      __HAL_RCC_HSE_CONFIG(HSEState);
       if (__HAL_RCC_GET_FLAG(RCC_FLAG_HSERDY) == RESET) {
         RCC_OscInitStruct.OscillatorType =  RCC_OSCILLATORTYPE_HSE;
-        RCC_OscInitStruct.HSEState = RCC_HSE_ON;
+        RCC_OscInitStruct.HSEState = HSEState;
       }
       break;
     default: