diff --git a/Mesh_3/doc/Mesh_3/examples.txt b/Mesh_3/doc/Mesh_3/examples.txt
index f79b97adc11..e542b02035e 100644
--- a/Mesh_3/doc/Mesh_3/examples.txt
+++ b/Mesh_3/doc/Mesh_3/examples.txt
@@ -12,4 +12,5 @@
 \example Mesh_3/mesh_polyhedral_domain.cpp
 \example Mesh_3/mesh_polyhedral_domain_with_features.cpp
 \example Mesh_3/mesh_two_implicit_spheres_with_balls.cpp
+\example Mesh_3/mesh_3D_gray_image.cpp
 */