diff --git a/AABB_tree/demo/AABB_tree/Scene.cpp b/AABB_tree/demo/AABB_tree/Scene.cpp
index a87cd91e890..19b07ee9b6f 100644
--- a/AABB_tree/demo/AABB_tree/Scene.cpp
+++ b/AABB_tree/demo/AABB_tree/Scene.cpp
@@ -14,7 +14,7 @@
 
 #include <CGAL/Timer.h>
 #include <CGAL/IO/Polyhedron_iostream.h>
-#include <CGAL/Subdivision_method_3.h>
+#include <CGAL/subdivision_method_3.h>
 
 #include <QOpenGLShader>
 #include <QDebug>
diff --git a/Principal_component_analysis/demo/Principal_component_analysis/Scene.cpp b/Principal_component_analysis/demo/Principal_component_analysis/Scene.cpp
index 49a418f142e..3663ff7baf4 100644
--- a/Principal_component_analysis/demo/Principal_component_analysis/Scene.cpp
+++ b/Principal_component_analysis/demo/Principal_component_analysis/Scene.cpp
@@ -10,7 +10,7 @@
 
 #include <CGAL/Timer.h>
 #include <CGAL/IO/Polyhedron_iostream.h>
-#include <CGAL/Subdivision_method_3.h>
+#include <CGAL/subdivision_method_3.h>
 
 #include <CGAL/centroid.h>
 #include <CGAL/linear_least_squares_fitting_3.h>