diff --git a/Packages/Kernel_23/include/CGAL/Kernel/function_objects.h b/Packages/Kernel_23/include/CGAL/Kernel/function_objects.h
index e113f3b6990..1da7552ea9e 100644
--- a/Packages/Kernel_23/include/CGAL/Kernel/function_objects.h
+++ b/Packages/Kernel_23/include/CGAL/Kernel/function_objects.h
@@ -22,7 +22,7 @@
 #define CGAL_KERNEL_FUNCTION_OBJECTS_H
 
 #include <CGAL/functional_base.h>
-//#include <CGAL/Origin.h>
+#include <CGAL/Origin.h>
 #include <CGAL/Bbox_2.h>
 #include <CGAL/Bbox_3.h>