diff --git a/variants/start/variant.c b/variants/start/variant.c
index d220902..82e8e90 100644
--- a/variants/start/variant.c
+++ b/variants/start/variant.c
@@ -94,17 +94,13 @@ uint32_t analogInputToChannelNumber(uint32_t PinNumber)
 // ---------------------- PWM ---------------------- //
 // use only if digitalPinHasPWM() == true
 #define PWM_PIN_TO_PORT_NUMBER(pin) (((pin) & 16) ? 1 : 0)
-// use only if digitalPinHasPWM() == true
-static inline uint8_t pwmPinToGpioPinShift(uint8_t digitalPin)
-{
-  return digitalPin & 3;
-}
+
 // use only if digitalPinHasPWM() == true
 // return true if digitalPin configured as pwm
 bool digitalPinPwmIsOn(uint8_t digitalPin)
 {
   uint8_t config = 0;
-  uint8_t pinShift = pwmPinToGpioPinShift(digitalPin);
+  uint8_t pinShift = digitalPin & 3;
 
   if (PWM_PIN_TO_PORT_NUMBER(digitalPin) == 0)
     config = PIN_GET_PAD_CONFIG(PORT_0_CFG, pinShift);