diff --git a/trunk/paradiseo-mo/src/moILS.h b/trunk/paradiseo-mo/src/moILS.h
index 448b7eb93..ed48907c2 100644
--- a/trunk/paradiseo-mo/src/moILS.h
+++ b/trunk/paradiseo-mo/src/moILS.h
@@ -157,8 +157,14 @@ class moILS:public moAlgo < typename M::EOType >
   */
   bool operator()(EOT & _solution)
   {
+	    if ( _solution.invalid() )
+	      {
+		full_evaluation(_solution);
+	      } 
+	  
     EOT _solution_saved=_solution;
 
+
     continu.init ();
 
     // some code has been duplicated in order to avoid one perturbation and one evaluation without adding a test in the loop.