diff --git a/grblHAL_Teensy4/src/driver.c b/grblHAL_Teensy4/src/driver.c
index cc16909..b963d90 100644
--- a/grblHAL_Teensy4/src/driver.c
+++ b/grblHAL_Teensy4/src/driver.c
@@ -968,9 +968,7 @@ static void stepperPulseStartSynchronized (stepper_t *stepper)
 
 #if PLASMA_ENABLE
 
-#if PLASMA_ENABLE
 static void output_pulse_isr(void);
-#endif
 
 static axes_signals_t pulse_output = {0};