diff --git a/cores/arduino/wiring_analog.c b/cores/arduino/wiring_analog.c
index 44a481b..73c0c55 100644
--- a/cores/arduino/wiring_analog.c
+++ b/cores/arduino/wiring_analog.c
@@ -86,7 +86,6 @@ uint32_t analogRead(uint32_t PinNumber)
 #define PWM_RESOLUTION_DEFAULT    8
 #define WRITE_VAL_MAX_DEFAULT     ((1<<PWM_RESOLUTION_DEFAULT) - 1)
 #define PWM_TOP_VAL_DEFAULT       32000   // corresponds 1000 Hz
-#define PWM_FREQUENCY_MAX         1000000 // Hz
 
 static TIMER32_HandleTypeDef htimer32;
 static TIMER32_CHANNEL_HandleTypeDef htimer32_channel;
diff --git a/variants/elbear_ace_uno/pins_arduino.h b/variants/elbear_ace_uno/pins_arduino.h
index 9e02c16..7a7f3ce 100644
--- a/variants/elbear_ace_uno/pins_arduino.h
+++ b/variants/elbear_ace_uno/pins_arduino.h
@@ -78,6 +78,7 @@ void additionalPinsInit(uint32_t PinNumber);
 uint32_t analogInputToChannelNumber(uint32_t PinNumber);
 
 // PWM
+#define PWM_FREQUENCY_MAX         1000000 // Hz
 bool digitalPinHasPWM(uint8_t p);
 bool digitalPinPwmIsOn(uint8_t digitalPin); // use only if digitalPinHasPWM() == true
 // determines which timer the pin belongs to
diff --git a/variants/start/pins_arduino.h b/variants/start/pins_arduino.h
index 4669d9f..7068abb 100644
--- a/variants/start/pins_arduino.h
+++ b/variants/start/pins_arduino.h
@@ -125,6 +125,7 @@ static inline void additionalPinsInit(uint32_t PinNumber) {}
 uint32_t analogInputToChannelNumber(uint32_t PinNumber);
 
 // PWM
+#define PWM_FREQUENCY_MAX         1000000 // Hz
 bool digitalPinHasPWM(uint8_t p);
 bool digitalPinPwmIsOn(uint8_t digitalPin); // use only if digitalPinHasPWM() == true
 // determines which timer the pin belongs to