1 files changed, 2 insertions, 0 deletions
diff --git a/os/hal/platforms/STM32F1xx/hal_lld.c b/os/hal/platforms/STM32F1xx/hal_lld.c
index bcb7d3f47..3d3c6caaa 100644
--- a/os/hal/platforms/STM32F1xx/hal_lld.c
+++ b/os/hal/platforms/STM32F1xx/hal_lld.c
@@ -76,7 +76,9 @@ static void hal_lld_backup_domain_init(void) {
     RCC->BDCR |= RCC_BDCR_RTCEN;
 
     /* Prescaler value loaded in registers.*/
+#if HAL_USE_RTC
     rtc_lld_set_prescaler();
+#endif /* HAL_USE_RTC */
   }
 #endif /* STM32_RTCSEL != STM32_RTCSEL_NOCLOCK */
 }