diff --git a/src/low_power.c b/src/low_power.c
index 0dd0c2e..707fb6f 100644
--- a/src/low_power.c
+++ b/src/low_power.c
@@ -347,6 +347,11 @@ void LowPower_EnableWakeUpUart(serial_t *serial, void (*FuncPtr)(void))
   */
 WEAK void SystemClock_ConfigFromStop(void)
 {
+#if defined(__HAL_RCC_PWR_CLK_ENABLE)
+  /* Enable PWR clock, needed for example: voltage scaling */
+  __HAL_RCC_PWR_CLK_ENABLE();
+#endif
+
   SystemClock_Config();
 }