diff --git a/Cone_spanners_2/examples/Cone_spanners_2/compute_cones.cpp b/Cone_spanners_2/examples/Cone_spanners_2/compute_cones.cpp
index d87ee557208..299f4331d48 100644
--- a/Cone_spanners_2/examples/Cone_spanners_2/compute_cones.cpp
+++ b/Cone_spanners_2/examples/Cone_spanners_2/compute_cones.cpp
@@ -10,11 +10,11 @@
 #include <string>
 #include <vector>
 #include <boost/graph/adjacency_list.hpp>
-#include <CGAL/Exact_predicates_exact_constructions_kernel_with_sqrt.h>
+#include <CGAL/Exact_predicates_exact_constructions_kernel_with_root_of.h>
 #include <CGAL/Compute_cone_boundaries_2.h>
 
 // select the kernel type
-typedef CGAL::Exact_predicates_exact_constructions_kernel_with_sqrt   Kernel;
+typedef CGAL::Exact_predicates_exact_constructions_kernel_with_root_of   Kernel;
 typedef Kernel::Point_2                   Point_2;
 typedef Kernel::Direction_2               Direction_2;
 
diff --git a/Cone_spanners_2/examples/Cone_spanners_2/dijkstra_theta.cpp b/Cone_spanners_2/examples/Cone_spanners_2/dijkstra_theta.cpp
index e73ac75d0df..2419f1b6c76 100644
--- a/Cone_spanners_2/examples/Cone_spanners_2/dijkstra_theta.cpp
+++ b/Cone_spanners_2/examples/Cone_spanners_2/dijkstra_theta.cpp
@@ -10,12 +10,12 @@
 #include <iterator>
 #include <string>
 #include <vector>
+#include <CGAL/Exact_predicates_inexact_constructions_kernel.h>
+#include <CGAL/Construct_theta_graph_2.h>
 #include <boost/graph/graph_traits.hpp>
 #include <boost/graph/adjacency_list.hpp>
 #include <boost/property_map/property_map.hpp>
 #include <boost/graph/dijkstra_shortest_paths.hpp>
-#include <CGAL/Exact_predicates_inexact_constructions_kernel.h>
-#include <CGAL/Construct_theta_graph_2.h>
 
 using namespace boost;
 
diff --git a/Cone_spanners_2/examples/Cone_spanners_2/theta_io.cpp b/Cone_spanners_2/examples/Cone_spanners_2/theta_io.cpp
index 1281eb9ef66..e82488ecab6 100644
--- a/Cone_spanners_2/examples/Cone_spanners_2/theta_io.cpp
+++ b/Cone_spanners_2/examples/Cone_spanners_2/theta_io.cpp
@@ -11,12 +11,12 @@
 #include <string>
 #include <vector>
 #include <boost/graph/adjacency_list.hpp>
-#include <CGAL/Exact_predicates_exact_constructions_kernel_with_sqrt.h>
+#include <CGAL/Exact_predicates_exact_constructions_kernel_with_root_of.h>
 #include <CGAL/Construct_theta_graph_2.h>
 #include <CGAL/gnuplot_output_2.h>
 
 // select the kernel type
-typedef CGAL::Exact_predicates_exact_constructions_kernel_with_sqrt   Kernel;
+typedef CGAL::Exact_predicates_exact_constructions_kernel_with_root_of   Kernel;
 typedef Kernel::Point_2                   Point_2;
 typedef Kernel::Direction_2               Direction_2;
 // define the graph type