diff --git a/src/bus/pwm.c b/src/bus/pwm.c
index 3ef678c..fa77bba 100644
--- a/src/bus/pwm.c
+++ b/src/bus/pwm.c
@@ -81,7 +81,7 @@ int PWM_Init(void)
 	TCCR1B = BIT(WGM12) | BIT(WGM13) | BIT(CS10);
 	ICR1 = PWM_CYCLE_TOP; // 8000 MHz / 25000 KHz
   
-  // TIMER3: Fast mode, non-inverting, top=ICR3, prescale /1
+	// TIMER3: Fast mode, non-inverting, top=ICR3, prescale /1
 
 	TCCR3A = BIT(WGM31) | BIT(COM3A1) | BIT(COM3B1);
 	TCCR3B = BIT(WGM32) | BIT(WGM33) | BIT(CS30);
diff --git a/src/bus/pwm.h b/src/bus/pwm.h
index e0deaf2..9a8f68f 100644
--- a/src/bus/pwm.h
+++ b/src/bus/pwm.h
@@ -11,7 +11,7 @@
 #define PWM_CYCLE_TOP  (F_CPU / 25000 - 1) // 8 MHz / 25 KHz
 #define FAN01_MIN_DUTY (PWM_CYCLE_TOP * 0.2f)
 #define FAN02_MIN_DUTY (PWM_CYCLE_TOP * 0.2f)
-#define FAN03_MIN_DUTY (0xFF * 0.2f)
+#define FAN03_MIN_DUTY (PWM_CYCLE_TOP * 0.2f)
 
 int   PWM_Init(void);
 void  PWM_SetValue(int port, int value);