diff --git a/Grbl_Esp32/src/Protocol.cpp b/Grbl_Esp32/src/Protocol.cpp
index e6c71cff..9eb6a9c0 100644
--- a/Grbl_Esp32/src/Protocol.cpp
+++ b/Grbl_Esp32/src/Protocol.cpp
@@ -222,7 +222,7 @@ void protocol_main_loop() {
             return;  // Bail to main() program loop to reset system.
         }
         // check to see if we should disable the stepper drivers ... esp32 work around for disable in main loop.
-        if (stepper_idle && config->_idleTime != 0xff) {
+        if (stepper_idle && config->_idleTime != 255) {
             if (esp_timer_get_time() > stepper_idle_counter) {
                 config->_axes->set_disable(true);
             }
diff --git a/Grbl_Esp32/src/Stepper.cpp b/Grbl_Esp32/src/Stepper.cpp
index 0ffe0d81..fe2ca8eb 100644
--- a/Grbl_Esp32/src/Stepper.cpp
+++ b/Grbl_Esp32/src/Stepper.cpp
@@ -437,7 +437,7 @@ void IRAM_ATTR st_go_idle() {
     Stepper_Timer_Stop();
 
     // Set stepper driver idle state, disabled or enabled, depending on settings and circumstances.
-    if (((config->_idleTime != 0xff) || sys_rt_exec_alarm != ExecAlarm::None || sys.state == State::Sleep) && sys.state != State::Homing) {
+    if (((config->_idleTime != 255) || sys_rt_exec_alarm != ExecAlarm::None || sys.state == State::Sleep) && sys.state != State::Homing) {
         // Force stepper dwell to lock axes for a defined amount of time to ensure the axes come to a complete
         // stop and not drift from residual inertial forces at the end of the last movement.