diff --git a/libraries/AP_TECS/AP_TECS.h b/libraries/AP_TECS/AP_TECS.h
index 7ccdb90a4d..bb01141e1d 100644
--- a/libraries/AP_TECS/AP_TECS.h
+++ b/libraries/AP_TECS/AP_TECS.h
@@ -115,7 +115,7 @@ private:
 	AP_Float _rollComp;
 	AP_Float _spdWeight;
     AP_Float _landThrottle;
-    AP_Int8  _landAirspeed;
+    AP_Float _landAirspeed;
 	
 	// throttle demand in the range from 0.0 to 1.0
     float _throttle_dem;