diff --git a/Convex_hull_2/examples/Convex_hull_2/include/CGAL/ch_timing_2.h b/Convex_hull_2/examples/Convex_hull_2/include/CGAL/ch_timing_2.h
index dd8e31afde8..d97c2aa5a05 100644
--- a/Convex_hull_2/examples/Convex_hull_2/include/CGAL/ch_timing_2.h
+++ b/Convex_hull_2/examples/Convex_hull_2/include/CGAL/ch_timing_2.h
@@ -3,16 +3,14 @@
 //
 // This file is part of an example program for CGAL.  This example
 // program may be used, distributed and modified without limitation.
-//
-
 
 #ifndef CGAL_CH_TIMING_2_H
 #define CGAL_CH_TIMING_2_H
 
 #include <CGAL/Timer.h>
 
-
 CGAL_BEGIN_NAMESPACE
+
 template <class ForwardIterator, class OutputIterator, class Traits>
 void
 ch_timing( ForwardIterator first, ForwardIterator last,
@@ -22,9 +20,6 @@ ch_timing( ForwardIterator first, ForwardIterator last,
 
 CGAL_END_NAMESPACE
 
-#ifdef CGAL_CFG_NO_AUTOMATIC_TEMPLATE_INCLUSION
-#include <CGAL/ch_timing_2.C>
-#endif // CGAL_CFG_NO_AUTOMATIC_TEMPLATE_INCLUSION
+#include <CGAL/ch_timing_2_impl.h>
 
 #endif // CGAL_CH_TIMING_2_H
-
diff --git a/Convex_hull_2/examples/Convex_hull_2/include/CGAL/ch_timing_2.C b/Convex_hull_2/examples/Convex_hull_2/include/CGAL/ch_timing_2_impl.h
similarity index 93%
rename from Convex_hull_2/examples/Convex_hull_2/include/CGAL/ch_timing_2.C
rename to Convex_hull_2/examples/Convex_hull_2/include/CGAL/ch_timing_2_impl.h
index 4d936c0b15e..0555ff1e2d0 100644
--- a/Convex_hull_2/examples/Convex_hull_2/include/CGAL/ch_timing_2.C
+++ b/Convex_hull_2/examples/Convex_hull_2/include/CGAL/ch_timing_2_impl.h
@@ -3,15 +3,11 @@
 //
 // This file is part of an example program for CGAL.  This example
 // program may be used, distributed and modified without limitation.
-//
 
+#ifndef CGAL_CH_TIMING_2_IMPL_H
+#define CGAL_CH_TIMING_2_IMPL_H
 
-#ifndef CGAL_CH_TIMING_2_C
-#define CGAL_CH_TIMING_2_C
-
-#ifndef CGAL_CH_TIMING_2_H
 #include <CGAL/ch_timing_2.h>
-#endif // CGAL_CH_TIMING_2_H
 
 CGAL_BEGIN_NAMESPACE
 
@@ -114,4 +110,4 @@ ch_timing( ForwardIterator first, ForwardIterator last,
 
 CGAL_END_NAMESPACE
 
-#endif // CGAL_CH_TIMING_2_C
+#endif // CGAL_CH_TIMING_2_IMPL_H