diff --git a/Marlin/src/HAL/AVR/timers.h b/Marlin/src/HAL/AVR/timers.h
index 33c3880b6b..d9cdfc4f01 100644
--- a/Marlin/src/HAL/AVR/timers.h
+++ b/Marlin/src/HAL/AVR/timers.h
@@ -44,14 +44,14 @@ typedef uint16_t hal_timer_t;
   #define MF_TIMER_TEMP         0
 #endif
 
-#define TEMP_TIMER_FREQUENCY    ((F_CPU) / 64.0 / 256.0)
+#define TEMP_TIMER_FREQUENCY    (((F_CPU) + 0x2000) / 0x4000)
 
 #define STEPPER_TIMER_RATE      HAL_TIMER_RATE
 #define STEPPER_TIMER_PRESCALE  8
-#define STEPPER_TIMER_TICKS_PER_US ((STEPPER_TIMER_RATE) / 1000000) // Cannot be of type double
+#define STEPPER_TIMER_TICKS_PER_US ((STEPPER_TIMER_RATE) / 1000000)
 
-#define PULSE_TIMER_RATE       STEPPER_TIMER_RATE   // frequency of pulse timer
-#define PULSE_TIMER_PRESCALE   STEPPER_TIMER_PRESCALE
+#define PULSE_TIMER_RATE         STEPPER_TIMER_RATE
+#define PULSE_TIMER_PRESCALE     STEPPER_TIMER_PRESCALE
 #define PULSE_TIMER_TICKS_PER_US STEPPER_TIMER_TICKS_PER_US
 
 #define ENABLE_STEPPER_DRIVER_INTERRUPT()  SBI(TIMSK1, OCIE1A)
diff --git a/Marlin/src/HAL/ESP32/timers.cpp b/Marlin/src/HAL/ESP32/timers.cpp
index c37ad2430c..a6893150b6 100644
--- a/Marlin/src/HAL/ESP32/timers.cpp
+++ b/Marlin/src/HAL/ESP32/timers.cpp
@@ -111,12 +111,12 @@ void HAL_timer_start(const uint8_t timer_num, const uint32_t frequency) {
 /**
  * Set the upper value of the timer, when the timer reaches this upper value the
  * interrupt should be triggered and the counter reset
- * @param timer_num timer number to set the count to
- * @param count     threshold at which the interrupt is triggered
+ * @param timer_num timer number to set the compare value to
+ * @param compare   threshold at which the interrupt is triggered
  */
-void HAL_timer_set_compare(const uint8_t timer_num, hal_timer_t count) {
+void HAL_timer_set_compare(const uint8_t timer_num, const hal_timer_t compare) {
   const tTimerConfig timer = timer_config[timer_num];
-  timer_set_alarm_value(timer.group, timer.idx, count);
+  timer_set_alarm_value(timer.group, timer.idx, compare);
 }
 
 /**