diff --git a/owlps-positioner/result.hh b/owlps-positioner/result.hh
index 3765b8f..626a64f 100644
--- a/owlps-positioner/result.hh
+++ b/owlps-positioner/result.hh
@@ -58,6 +58,8 @@ public:
 
   /** @name Write accessors */
   //@{
+  /// Sets the position
+  void set_position(const Point3D &_position) ;
   /// Computes the distance between #position and `real_position`
   void compute_error(const Point3D &real_position) ;
   //@}
@@ -109,6 +111,16 @@ inline float Result::get_error() const
 
 
 
+/* *** Write accessors *** */
+
+
+inline void Result::set_position(const Point3D &_position)
+{
+  position = _position ;
+}
+
+
+
 /* *** Operators *** */