diff --git a/owlps-positioner/src/stock.cc b/owlps-positioner/src/stock.cc
index c0e1aad..ea82d89 100644
--- a/owlps-positioner/src/stock.cc
+++ b/owlps-positioner/src/stock.cc
@@ -508,15 +508,15 @@ void Stock::generate_reference_point(const Point3D &point)
   for (unordered_map<string, AccessPoint>::const_iterator
        rx = aps.begin() ; rx != aps.end() ; ++rx)
     {
+      /* Update the mobile's attributes */
+      vmob_gain += rx->second.get_antenna_gain() / aps.size() ;
+      vmob_pow += rx->second.get_trx_power() / aps.size() ;
+
       /* Skip the AP if it is not at the good level */
       const Point3D &rx_coord = rx->second.get_coordinates() ;
       if (rx_coord.get_z() != point.get_z())
         continue ;
 
-      /* Update the mobile's attributes */
-      vmob_gain += rx->second.get_antenna_gain() / aps.size() ;
-      vmob_pow += rx->second.get_trx_power() / aps.size() ;
-
       /* Choose the 2 nearest APs in angle */
       multimap<double, pair<double,
                unordered_map<string, AccessPoint>::const_iterator> >