diff --git a/trunk/paradiseo-mo/tutorial/examples/function/affectation.h b/trunk/paradiseo-mo/tutorial/examples/function/affectation.h
index eabe77ba1..aa45da336 100644
--- a/trunk/paradiseo-mo/tutorial/examples/function/affectation.h
+++ b/trunk/paradiseo-mo/tutorial/examples/function/affectation.h
@@ -40,8 +40,8 @@
 #include <eoScalarFitness.h>
 #include <EO.h>
 
-// A float that has to be minimized.
-typedef eoScalarFitness< float, std::greater<double> > functionFitness ;
+// A double that has to be minimized.
+typedef eoScalarFitness< double, std::greater<double> > functionFitness ;
 
 class Affectation : public EO<functionFitness>, public std::pair<double, double>
 {};