diff --git a/libraries/AC_PID/AC_PID.h b/libraries/AC_PID/AC_PID.h
index 0a69f5eca0..b0ff88cfca 100755
--- a/libraries/AC_PID/AC_PID.h
+++ b/libraries/AC_PID/AC_PID.h
@@ -92,6 +92,7 @@ public:
 	void	imax(const int16_t v)	{ _imax.set(abs(v)); }
 
 	float	get_integrator() const	{ return _integrator; }
+	void	set_integrator(float i)	{ _integrator = i; }
 
     static const struct AP_Param::GroupInfo var_info[];