diff --git a/smp/src/topology/topology.cpp b/smp/src/topology/topology.cpp
index e444f7475..5a2937ee8 100644
--- a/smp/src/topology/topology.cpp
+++ b/smp/src/topology/topology.cpp
@@ -27,7 +27,6 @@ ParadisEO WebSite : http://paradiseo.gforge.inria.fr
 Contact: paradiseo-help@lists.gforge.inria.fr
 */
 
-
 template <class TopologyType>	
 std::vector<unsigned> paradiseo::smp::Topology<TopologyType>::getIdNeighbors(unsigned idNode) const
 {
@@ -57,3 +56,11 @@ void paradiseo::smp::Topology<TopologyType>::isolateNode(unsigned idNode)
         _matrix[i][idNode] = false;
     }
 }
+
+template <class TopologyType>
+TopologyType & paradiseo::smp::Topology<TopologyType>::getBuilder()
+{
+    TopologyType &b=_builder;
+    return b;
+}
+
diff --git a/smp/src/topology/topology.h b/smp/src/topology/topology.h
index 5981c01c4..ea45cd9e3 100644
--- a/smp/src/topology/topology.h
+++ b/smp/src/topology/topology.h
@@ -73,6 +73,11 @@ public :
     *@param idNode index of the node to be isolated
     */
     void isolateNode(unsigned idNode);
+    
+    /**
+    *Getter for the variable _builder by reference
+    */
+    TopologyType & getBuilder();
 	
 private :