1 files changed, 2 insertions, 1 deletions
diff --git a/src/stm32/stm32f0.c b/src/stm32/stm32f0.c
index 0232b602..b876db35 100644
--- a/src/stm32/stm32f0.c
+++ b/src/stm32/stm32f0.c
@@ -149,9 +149,10 @@ pll_setup(void)
 
     // Setup CFGR3 register
     uint32_t cfgr3 = RCC_CFGR3_I2C1SW;
-    if (CONFIG_USBSERIAL)
+#if CONFIG_USBSERIAL
         // Select PLL as source for USB clock
         cfgr3 |= RCC_CFGR3_USBSW;
+#endif
     RCC->CFGR3 = cfgr3;
 }