diff --git a/trunk/paradiseo-moeo/src/core/moeoBitVector.h b/trunk/paradiseo-moeo/src/core/moeoBitVector.h
index 61ed4b7ed..2e8642de8 100644
--- a/trunk/paradiseo-moeo/src/core/moeoBitVector.h
+++ b/trunk/paradiseo-moeo/src/core/moeoBitVector.h
@@ -38,6 +38,15 @@ public:
     {}
 
 
+    /**
+     * Returns the class name as a std::string
+     */
+    virtual std::string className() const
+    {
+    	return "moeoBitVector";
+    }
+    
+    
     /**
      * Writing object
      * @param _os output stream
diff --git a/trunk/paradiseo-moeo/src/core/moeoRealVector.h b/trunk/paradiseo-moeo/src/core/moeoRealVector.h
index 9c2816e18..0fa60cd06 100644
--- a/trunk/paradiseo-moeo/src/core/moeoRealVector.h
+++ b/trunk/paradiseo-moeo/src/core/moeoRealVector.h
@@ -30,7 +30,16 @@ public:
      */
     moeoRealVector(unsigned int _size = 0, double _value = 0.0) : moeoVector< MOEOObjectiveVector, MOEOFitness, MOEODiversity, double >(_size, _value)
     {}
-
+    
+    
+    /**
+     * Returns the class name as a std::string
+     */
+    virtual std::string className() const
+    {
+    	return "moeoRealVector";
+    }
+    
 };
 
 #endif /*MOEOREALVECTOR_H_*/