diff --git a/Demo_C/Demo/LED/LED.c b/Demo_C/Demo/LED/LED.c
index 5b5f48a..33f2faf 100644
--- a/Demo_C/Demo/LED/LED.c
+++ b/Demo_C/Demo/LED/LED.c
@@ -28,7 +28,7 @@ static int n_loops;
 static int wait;
 
 void simple_rgb_test(TA * p_ta_array);
-void spectrum(TA * p_ta_array);
+void spectrum();
 void update_lights(TA * p_ta_array);
 
 void PrgInit