diff --git a/trunk/paradiseo-moeo/tutorial/Lesson1/Sch1.cpp b/trunk/paradiseo-moeo/tutorial/Lesson1/Sch1.cpp
index 0d8a43352..f774f6f6b 100644
--- a/trunk/paradiseo-moeo/tutorial/Lesson1/Sch1.cpp
+++ b/trunk/paradiseo-moeo/tutorial/Lesson1/Sch1.cpp
@@ -42,6 +42,7 @@
 
 using namespace std;
 
+
 // the moeoObjectiveVectorTraits : minimizing 2 objectives
 class Sch1ObjectiveVectorTraits : public moeoObjectiveVectorTraits
 {