diff --git a/grbl/config.h b/grbl/config.h
index ba3b672..d6eb3b3 100644
--- a/grbl/config.h
+++ b/grbl/config.h
@@ -39,8 +39,8 @@
 //#define CPU_MAP_AZTEEG_X5       // Azteeg X5 Board (NXP LPC1769 MCU)
 
 // Force other Spindle PWM Pin (default is P2.5)
-//#define SPINDLE_PWM_PIN_1_23
-#define SPINDLE_PWM_PIN_2_4
+#define SPINDLE_PWM_PIN_1_23
+//#define SPINDLE_PWM_PIN_2_4
 
 // Define machine type for machine specific defaults
 //#define DEFAULTS_GENERIC