diff --git a/Grbl_Esp32/Machines/pen_laser.h b/Grbl_Esp32/Machines/pen_laser.h
index d2bd4700..eb405f2e 100644
--- a/Grbl_Esp32/Machines/pen_laser.h
+++ b/Grbl_Esp32/Machines/pen_laser.h
@@ -51,7 +51,7 @@
 
 // If SPINDLE_PWM_PIN is commented out, this frees up the pin, but Grbl will still
 // use a virtual spindle. Do not comment out the other parameters for the spindle.
-#define SPINDLE_PWM_PIN    GPIO_NUM_17 // Laser PWM
+//#define SPINDLE_PWM_PIN    GPIO_NUM_17 // Laser PWM
 
 #define USING_SERVO  // uncomment to use this feature
 //#define USING_SOLENOID // uncomment to use this feature
diff --git a/Grbl_Esp32/servo_axis.h b/Grbl_Esp32/servo_axis.h
index fefb71af..75d4bb35 100644
--- a/Grbl_Esp32/servo_axis.h
+++ b/Grbl_Esp32/servo_axis.h
@@ -79,7 +79,7 @@
 #define SERVO_CAL_MIN 20.0 // Percent: the minimum allowable calibration value
 #define SERVO_CAL_MAX 180.0 // Percent: the maximum allowable calibration value
 
-#define SERVO_TIMER_INT_FREQ 20 // Hz This is the task frequency
+#define SERVO_TIMER_INT_FREQ 20.0 // Hz This is the task frequency
 
 #define SERVO_HOMING_OFF 0 // servo is off during homing
 #define SERVO_HOMING_TARGET 1 // servo is send to a location during homing