diff --git a/plugins/Kaleidoscope-FocusSerial/src/kaleidoscope/plugin/FocusSerial.cpp b/plugins/Kaleidoscope-FocusSerial/src/kaleidoscope/plugin/FocusSerial.cpp
index abd7ee6e..268cc4db 100644
--- a/plugins/Kaleidoscope-FocusSerial/src/kaleidoscope/plugin/FocusSerial.cpp
+++ b/plugins/Kaleidoscope-FocusSerial/src/kaleidoscope/plugin/FocusSerial.cpp
@@ -33,6 +33,7 @@ void FocusSerial::drain(void) {
 }
 
 EventHandlerResult FocusSerial::afterEachCycle() {
+  // If the serial buffer is empty, we don't have any work to do
   if (Runtime.serialPort().available() == 0)
     return EventHandlerResult::OK;