diff --git a/Simulator/Autopilot/autopilot.cxx b/Simulator/Autopilot/autopilot.cxx
index 354a81bcd..1f270ed48 100644
--- a/Simulator/Autopilot/autopilot.cxx
+++ b/Simulator/Autopilot/autopilot.cxx
@@ -32,13 +32,13 @@
 
 #include "autopilot.hxx"
 
+#include <GUI/gui.h>
 #include <Include/fg_constants.h>
+#include <Cockpit/panel.hxx>
 #include <Debug/logstream.hxx>
 #include <Main/options.hxx>
-#include <Cockpit/panel.hxx>
 #include <Main/views.hxx>
 
-#include <plib/pu.h>
 
 // The below routines were copied right from hud.c ( I hate reinventing
 // the wheel more than necessary)
@@ -49,8 +49,7 @@
 //
 
 
-static double get_speed( void )
-{
+static double get_speed( void ) {
     return( current_aircraft.fdm_state->get_V_equiv_kts() );
 }
 
diff --git a/Simulator/Autopilot/autopilot.hxx b/Simulator/Autopilot/autopilot.hxx
index 438feaf9b..8d2871fb3 100644
--- a/Simulator/Autopilot/autopilot.hxx
+++ b/Simulator/Autopilot/autopilot.hxx
@@ -80,6 +80,8 @@ void fgAPAltitudeAdjust( double inc );
 void fgAPHeadingAdjust( double inc );
 void fgAPAutoThrottleAdjust( double inc );
 
+void fgAPHeadingSet( double value );
+
 void fgAPReset(void);
 
 class puObject;