diff --git a/branches/paradiseo-moeo-1.0/src/moeoEA.h b/branches/paradiseo-moeo-1.0/src/moeoEA.h
index 901dba540..36d115ead 100644
--- a/branches/paradiseo-moeo-1.0/src/moeoEA.h
+++ b/branches/paradiseo-moeo-1.0/src/moeoEA.h
@@ -14,12 +14,13 @@
 #define MOEOEA_H_
 
 #include <eoAlgo.h>
+#include <moeoAlgo.h>
 
 /**
  * Abstract class for multi-objective evolutionary algorithms.
  */
 template < class MOEOT >
-class moeoEA : public eoAlgo < MOEOT > {};
+class moeoEA : public moeoAlgo, public eoAlgo < MOEOT > {};
 
 
 #endif /*MOEOEA_H_*/
diff --git a/branches/paradiseo-moeo-1.0/src/moeoLS.h b/branches/paradiseo-moeo-1.0/src/moeoLS.h
index 41edcccd6..5fa86308f 100644
--- a/branches/paradiseo-moeo-1.0/src/moeoLS.h
+++ b/branches/paradiseo-moeo-1.0/src/moeoLS.h
@@ -14,6 +14,7 @@
 #define MOEOLS_H_
 
 #include <eoFunctor.h>
+#include <moeoAlgo.h>
 #include <moeoArchive.h>
 
 /**
@@ -21,7 +22,7 @@
  * Starting from a Type (i.e.: an individual, a pop, an archive...), it produces a set of new non-dominated solutions.
  */
 template < class MOEOT, class Type >
-class moeoLS: public eoBF < Type, moeoArchive < MOEOT > &, void >
+class moeoLS: public moeoAlgo, public eoBF < Type, moeoArchive < MOEOT > &, void >
     {};
 
 #endif /*MOEOLS_H_*/