1 files changed, 6 insertions, 0 deletions
diff --git a/os/hal/platforms/STM32F1xx/hal_lld.c b/os/hal/platforms/STM32F1xx/hal_lld.c
index 7e68883ab..3f5f44efe 100644
--- a/os/hal/platforms/STM32F1xx/hal_lld.c
+++ b/os/hal/platforms/STM32F1xx/hal_lld.c
@@ -140,9 +140,15 @@ void stm32_clock_init(void) {
 #endif
 
   /* Clock settings.*/
+#if STM32_HAS_USB
   RCC->CFGR = STM32_MCOSEL | STM32_USBPRE | STM32_PLLMUL | STM32_PLLXTPRE |
               STM32_PLLSRC | STM32_ADCPRE | STM32_PPRE2  | STM32_PPRE1    |
               STM32_HPRE;
+#else
+  RCC->CFGR = STM32_MCOSEL |                STM32_PLLMUL | STM32_PLLXTPRE |
+              STM32_PLLSRC | STM32_ADCPRE | STM32_PPRE2  | STM32_PPRE1    |
+              STM32_HPRE;
+#endif
 
   /* Flash setup and final clock selection.   */
   FLASH->ACR = STM32_FLASHBITS;