diff --git a/ArduCopter/config.h b/ArduCopter/config.h
index 6b73aa4219..bee8cb8a66 100644
--- a/ArduCopter/config.h
+++ b/ArduCopter/config.h
@@ -192,18 +192,6 @@
 #endif
 
 
-//////////////////////////////////////////////////////////////////////////////
-// AIRSPEED_SENSOR
-// AIRSPEED_RATIO
-//
-#ifndef AIRSPEED_SENSOR
-# define AIRSPEED_SENSOR		DISABLED
-#endif
-#ifndef AIRSPEED_RATIO
-# define AIRSPEED_RATIO			1.9936		// Note - this varies from the value in ArduPilot due to the difference in ADC resolution
-#endif
-
-
 //////////////////////////////////////////////////////////////////////////////
 // HIL_MODE                                 OPTIONAL