diff --git a/Grbl_Esp32/Machines/4axis_xyxz.h b/Grbl_Esp32/Machines/4axis_xyxz.h
index 25ee092f..c41cbc74 100644
--- a/Grbl_Esp32/Machines/4axis_xyxz.h
+++ b/Grbl_Esp32/Machines/4axis_xyxz.h
@@ -33,7 +33,7 @@
 #define A_DIRECTION_PIN         GPIO_NUM_22
 #endif
 
-#define SPINDLE_TYPE SPINDLE_TYPE_RELAY
+#define SPINDLE_TYPE SpindleType::RELAY
 //#define SPINDLE_ENABLE_PIN      GPIO_NUM_32
 #define SPINDLE_OUTPUT_PIN GPIO_NUM_32