diff --git a/examples/simple-pwm-led/README b/examples/simple-pwm-led/README
deleted file mode 100644
index 3ff862e..0000000
--- a/examples/simple-pwm-led/README
+++ /dev/null
@@ -1,14 +0,0 @@
-This is a bare Makefile project sample to work with ino files, and makes use
-of the arduino-make/arduino-mk Makefile framework that aims to provide all of
-the IDE functionalities but via a Makefile.
-
-See https://github.com/sudar/Arduino-Makefile
-
-Once installed you need to set at least these two env variables to be able to
-use the Makefile:
-
-  export ARDUINO_DIR=/usr/share/arduino
-  export ARDMK_DIR=/usr/share/arduino
-  
-Adjust to reflect your own paths! Put that in your shell rc!
-
diff --git a/examples/simple-pwm-led/pwm-led.ino b/examples/simple-pwm-led/pwm-led.ino
index 2ff0ab0..5b01adf 100644
--- a/examples/simple-pwm-led/pwm-led.ino
+++ b/examples/simple-pwm-led/pwm-led.ino
@@ -34,8 +34,8 @@ void loop() {
         delay_off = 1023 - analogRead(POT_2);
 
         // Parameters for the PWM
-        digitalWrite(LED, HIGH);         // turn the LED on
-	delay(delay_on);                // wait for delay_on ms
-	digitalWrite(LED, LOW);          // turn the LED off
-	delay(delay_off);               // wait for delay_off ms
+        digitalWrite(LED, HIGH);        // turn the LED on
+        delay(delay_on);                // wait for delay_on ms
+        digitalWrite(LED, LOW);         // turn the LED off
+        delay(delay_off);               // wait for delay_off ms
 }