diff --git a/STL_Extension/include/CGAL/function_objects.h b/STL_Extension/include/CGAL/function_objects.h
index bf9b079f9a0..cb7e1e40170 100644
--- a/STL_Extension/include/CGAL/function_objects.h
+++ b/STL_Extension/include/CGAL/function_objects.h
@@ -26,7 +26,6 @@
 #ifndef CGAL_FUNCTION_OBJECTS_H
 #define CGAL_FUNCTION_OBJECTS_H 1
 
-#include <CGAL/functional_base.h>
 #include <functional>
 
 CGAL_BEGIN_NAMESPACE