diff --git a/Polyhedron/demo/Polyhedron/CMakeLists.txt b/Polyhedron/demo/Polyhedron/CMakeLists.txt
index 325a670e809..ecab2ece7fd 100644
--- a/Polyhedron/demo/Polyhedron/CMakeLists.txt
+++ b/Polyhedron/demo/Polyhedron/CMakeLists.txt
@@ -236,7 +236,7 @@ if(CGAL_Qt5_FOUND AND Qt5_FOUND)
   add_item(scene_c3t3_item Scene_c3t3_item.cpp)
   target_link_libraries(
     scene_c3t3_item PUBLIC scene_triangulation_3_item
-    scene_surface_mesh_item scene_polygon_soup_item
+    scene_surface_mesh_item scene_polygon_soup_item scene_edit_box_item
     scene_basic_objects ${TBB_LIBRARIES})
 
   if(TARGET CGAL::TBB_support)
diff --git a/Polyhedron/demo/Polyhedron/Scene_triangulation_3_item.cpp b/Polyhedron/demo/Polyhedron/Scene_triangulation_3_item.cpp
index 7eee6f9c094..04d0d44c58e 100644
--- a/Polyhedron/demo/Polyhedron/Scene_triangulation_3_item.cpp
+++ b/Polyhedron/demo/Polyhedron/Scene_triangulation_3_item.cpp
@@ -3,6 +3,7 @@
 #include "Scene_triangulation_3_item.h"
 #include "Scene_surface_mesh_item.h"
 #include "Scene_spheres_item.h"
+#include "Plugins/PCA/Scene_edit_box_item.h"
 
 #include <QVector>
 #include <QColor>
@@ -456,13 +457,11 @@ struct Scene_triangulation_3_item_priv {
   {
     if (intersection)
       intersection->setVisible(b);
+    cut_plane_enabled = b;
   }
   bool is_intersection_enabled()
   {
-    if (intersection)
-      return intersection->visible();
-    else
-      return false;
+    return cut_plane_enabled;
   }
   bool is_item_clip_box(int id)
   {
@@ -530,6 +529,7 @@ struct Scene_triangulation_3_item_priv {
   boost::dynamic_bitset<> visible_subdomain;
   std::bitset<24> bs[4] = {16777215, 16777215, 16777215, 16777215};
   bool show_tetrahedra;
+  bool cut_plane_enabled;
   bool is_aabb_tree_built;
   bool last_intersection;
   bool cut_edges;
diff --git a/Polyhedron/demo/Polyhedron/Scene_triangulation_3_item.h b/Polyhedron/demo/Polyhedron/Scene_triangulation_3_item.h
index 89f0e38d3d9..33a2cd8f124 100644
--- a/Polyhedron/demo/Polyhedron/Scene_triangulation_3_item.h
+++ b/Polyhedron/demo/Polyhedron/Scene_triangulation_3_item.h
@@ -2,7 +2,6 @@
 #define SCENE_TRIANGULATION_3_ITEM_H
 
 #include "Scene_triangulation_3_item_config.h"
-#include "Plugins/PCA/Scene_edit_box_item.h"
 #include "T3_type.h"
 
 #include <QVector>