diff --git a/Isosurfacing_3/examples/Isosurfacing_3/contouring_implicit_data.cpp b/Isosurfacing_3/examples/Isosurfacing_3/contouring_implicit_data.cpp
index b00e81d03d4..b23ddabcead 100644
--- a/Isosurfacing_3/examples/Isosurfacing_3/contouring_implicit_data.cpp
+++ b/Isosurfacing_3/examples/Isosurfacing_3/contouring_implicit_data.cpp
@@ -12,6 +12,7 @@
 #include <CGAL/IO/polygon_soup_io.h>
 
 #include <vector>
+#include <array>
 
 using Kernel = CGAL::Simple_cartesian<double>;
 using FT = typename Kernel::FT;
diff --git a/Isosurfacing_3/examples/Isosurfacing_3/contouring_mesh_offset.cpp b/Isosurfacing_3/examples/Isosurfacing_3/contouring_mesh_offset.cpp
index 4c6aed8bbb8..c8051739a82 100644
--- a/Isosurfacing_3/examples/Isosurfacing_3/contouring_mesh_offset.cpp
+++ b/Isosurfacing_3/examples/Isosurfacing_3/contouring_mesh_offset.cpp
@@ -19,7 +19,6 @@
 #include <CGAL/boost/graph/IO/polygon_mesh_io.h>
 #include <CGAL/IO/polygon_soup_io.h>
 
-#include <array>
 #include <iostream>
 #include <string>
 #include <vector>