diff --git a/Tools/ArduTracker/APM_Config.h.reference b/Tools/ArduTracker/APM_Config.h.reference
index 0964e16769..3eb4c9c3c4 100644
--- a/Tools/ArduTracker/APM_Config.h.reference
+++ b/Tools/ArduTracker/APM_Config.h.reference
@@ -2,7 +2,7 @@
 // Example and reference ArduPilot Mega configuration file
 // =======================================================
 //
-// This file contains documentation and examples for configuration options
+// This file contains documentation and examples of configuration options
 // supported by the ArduPilot Mega software.
 //
 // Most of these options are just that - optional.  You should create