diff --git a/examples/Projects/ArduinoISP/ArduinoISP.ino b/examples/Projects/ArduinoISP/ArduinoISP.ino
index 03a39d7..5a9266e 100644
--- a/examples/Projects/ArduinoISP/ArduinoISP.ino
+++ b/examples/Projects/ArduinoISP/ArduinoISP.ino
@@ -120,7 +120,7 @@ void heartbeat() {
   if (hbval < 32) hbdelta = -hbdelta;
   hbval += hbdelta;
   analogWrite(LED_HB, hbval);
-  delay(40);
+  delay(20);
 }