diff --git a/build/shared/examples/04.Communication/SerialEvent/SerialEvent.ino b/build/shared/examples/04.Communication/SerialEvent/SerialEvent.ino
index cbaaf88f3..94a3cc39f 100644
--- a/build/shared/examples/04.Communication/SerialEvent/SerialEvent.ino
+++ b/build/shared/examples/04.Communication/SerialEvent/SerialEvent.ino
@@ -8,6 +8,9 @@
  A good test for this is to try it with a GPS receiver
  that sends out NMEA 0183 sentences.
 
+ NOTE: The serialEvent() feature is not available on the
+ Leonardo, Micro, or other ATmega32U4 based boards.
+ 
  Created 9 May 2011
  by Tom Igoe