diff --git a/Marlin/src/module/stepper.h b/Marlin/src/module/stepper.h
index 46b3493bb6e6..511a3aa80dac 100644
--- a/Marlin/src/module/stepper.h
+++ b/Marlin/src/module/stepper.h
@@ -299,7 +299,7 @@ class Stepper {
     // and avoid the most unreasonably slow step rates.
     static constexpr uint32_t minimal_step_rate = (
       #ifdef CPU_32_BIT
-        _MAX((STEPPER_TIMER_RATE) / HAL_TIMER_TYPE_MAX, 1U) // 32-bit shouldn't go below 1
+        _MAX((uint32_t(STEPPER_TIMER_RATE) / HAL_TIMER_TYPE_MAX), 1U) // 32-bit shouldn't go below 1
       #else
         (F_CPU) / 500000U   // AVR shouldn't go below 32 (16MHz) or 40 (20MHz)
       #endif