diff --git a/libraries/AP_Airspeed/AP_Airspeed.h b/libraries/AP_Airspeed/AP_Airspeed.h
index 5ab9d86111..4b059b8fc8 100644
--- a/libraries/AP_Airspeed/AP_Airspeed.h
+++ b/libraries/AP_Airspeed/AP_Airspeed.h
@@ -12,44 +12,54 @@
 class AP_Airspeed
 {
 public:
-	// constructor
-	AP_Airspeed(AP_AnalogSource *source) {
-		_source = source;
-	}
+    // constructor
+    AP_Airspeed(AP_AnalogSource *source) {
+        _source = source;
+    }
 
-	// read the analog source and update _airspeed
-	void read(void);
+    // read the analog source and update _airspeed
+    void        read(void);
 
-	// calibrate the airspeed. This must be called on startup if the
-	// altitude/climb_rate/acceleration interfaces are ever used
-	// the callback is a delay() like routine
-	void calibrate(void (*callback)(unsigned long t));
+    // calibrate the airspeed. This must be called on startup if the
+    // altitude/climb_rate/acceleration interfaces are ever used
+    // the callback is a delay() like routine
+    void            calibrate(void (*callback)(unsigned long t));
 
-	// return the current airspeed in m/s
-	float get_airspeed(void) { return _airspeed; }
+    // return the current airspeed in m/s
+    float           get_airspeed(void) {
+        return _airspeed;
+    }
 
-	// return the current airspeed in cm/s
-	float get_airspeed_cm(void) { return _airspeed*100; }
+    // return the current airspeed in cm/s
+    float        get_airspeed_cm(void) {
+        return _airspeed*100;
+    }
 
     // return true if airspeed is enabled, and airspeed use is set
-    bool use(void) { return _enable && _use && _offset != 0; }
+    bool        use(void) {
+        return _enable && _use && _offset != 0;
+    }
 
     // return true if airspeed is enabled
-    bool enabled(void) { return _enable; }
+    bool        enabled(void) {
+        return _enable;
+    }
 
     // used by HIL to set the airspeed
-    void set_HIL(float airspeed) { _airspeed = airspeed; }
+    void        set_HIL(float airspeed) {
+        _airspeed = airspeed;
+    }
 
-	static const struct AP_Param::GroupInfo var_info[];
+    static const struct AP_Param::GroupInfo         var_info[];
 
 private:
-	AP_AnalogSource *_source;
-	AP_Float    _offset;
-	AP_Float    _ratio;
-	AP_Int8     _use;
-	AP_Int8     _enable;
-	float	    _airspeed;
-	float	    _airspeed_raw;
+    AP_AnalogSource *                               _source;
+    AP_Float        _offset;
+    AP_Float        _ratio;
+    AP_Int8         _use;
+    AP_Int8         _enable;
+    float           _airspeed;
+    float           _airspeed_raw;
 };