diff --git a/trunk/paradiseo-peo/tutorial/Lesson6/make/make_library.h b/trunk/paradiseo-peo/tutorial/Lesson6/make/make_library.h
index 52752f5c6..781db653c 100644
--- a/trunk/paradiseo-peo/tutorial/Lesson6/make/make_library.h
+++ b/trunk/paradiseo-peo/tutorial/Lesson6/make/make_library.h
@@ -5,3 +5,4 @@
 #include <make_continue_moeo.h>
 #include <make_ea_moeo.h>
 #include <make_para_eval.h>
+#include <make_checkpoint_moeo.h>