diff --git a/Triangulation_2/doc/Triangulation_2/examples.txt b/Triangulation_2/doc/Triangulation_2/examples.txt
index 688a58665ae..365d43a7127 100644
--- a/Triangulation_2/doc/Triangulation_2/examples.txt
+++ b/Triangulation_2/doc/Triangulation_2/examples.txt
@@ -23,4 +23,5 @@
 \example Triangulation_2/draw_triangulation_2.cpp
 \example Triangulation_2/low_dimensional.cpp
 \example Triangulation_2/star_conflict_zone.cpp
+\example Triangulation_2/triangulation_projection_traits.cpp
 */