diff --git a/Marlin/src/HAL/shared/Delay.h b/Marlin/src/HAL/shared/Delay.h
index 4751d7a5e2..eeaf4c59fc 100644
--- a/Marlin/src/HAL/shared/Delay.h
+++ b/Marlin/src/HAL/shared/Delay.h
@@ -100,7 +100,7 @@ void calibrate_delay_loop();
 
   // For delay in microseconds, no smart delay selection is required, directly call the delay function
   // Teensy compiler is too old and does not accept smart delay compile-time / run-time selection correctly
-  #define DELAY_US(x) DelayCycleFnc((x) * ((F_CPU) / 1000000UL))
+  #define DELAY_US(x) DelayCycleFnc((unsigned long)(x) * ((F_CPU) / 1000000UL))
 
 #elif defined(__AVR__)
   FORCE_INLINE static void __delay_up_to_3c(uint8_t cycles) {
@@ -164,7 +164,7 @@ void calibrate_delay_loop();
   }
 
   // Delay in microseconds
-  #define DELAY_US(x) DELAY_CYCLES((x) * ((F_CPU) / 1000000UL))
+  #define DELAY_US(x) DELAY_CYCLES((unsigned long)(x) * ((F_CPU) / 1000000UL))
 
   #define DELAY_CYCLES_VAR DELAY_CYCLES
 
@@ -173,7 +173,7 @@ void calibrate_delay_loop();
   // DELAY_CYCLES specified inside platform
 
   // Delay in microseconds
-  #define DELAY_US(x) DELAY_CYCLES((x) * ((F_CPU) / 1000000UL))
+  #define DELAY_US(x) DELAY_CYCLES((unsigned long)(x) * ((F_CPU) / 1000000UL))
 
   #define DELAY_CYCLES_VAR DELAY_CYCLES