diff --git a/examples/simple-pwm-led-audio/pwm-led-audio.ino b/examples/simple-pwm-led-audio/pwm-led-audio.ino
index 4d74fc8..559b656 100644
--- a/examples/simple-pwm-led-audio/pwm-led-audio.ino
+++ b/examples/simple-pwm-led-audio/pwm-led-audio.ino
@@ -17,7 +17,6 @@
 
 float delay_on;
 float delay_off;
-float delay_div;
 
 void setup() {                
 	// initialize the digital pin as an output.
@@ -40,9 +39,9 @@ void loop() {
 
         // Parameters for the PWM
         digitalWrite(LED, HIGH);        // turn the LED on
-        analogWrite(SPEAKER, 255);      // set max audio signal
+        digitalWrite(SPEAKER, HIGH);    // set max audio signal
         delay(delay_on);                // wait for delay_on ms
         digitalWrite(LED, LOW);         // turn the LED off
-        analogWrite(SPEAKER, 0);        // audio flat line
+        digitalWrite(SPEAKER, LOW);     // audio flat line
         delay(delay_off);               // wait for delay_off ms
 }