diff --git a/ArduCopter/mode.h b/ArduCopter/mode.h
index 3de08e4766a69f..76c342fe19beaa 100644
--- a/ArduCopter/mode.h
+++ b/ArduCopter/mode.h
@@ -679,6 +679,7 @@ class ModeAuto : public Mode {
     int32_t condition_value;  // used in condition commands (eg delay, change alt, etc.)
     uint32_t condition_start;
 
+    // Land within Auto state
     enum class State {
         FlyToLocation = 0,
         Descending = 1