diff --git a/Triangulation_on_hyperbolic_surface_2/doc/Triangulation_on_hyperbolic_surface_2/PackageDescription.txt b/Triangulation_on_hyperbolic_surface_2/doc/Triangulation_on_hyperbolic_surface_2/PackageDescription.txt
index b051d7fb880..5a59dd46ecc 100644
--- a/Triangulation_on_hyperbolic_surface_2/doc/Triangulation_on_hyperbolic_surface_2/PackageDescription.txt
+++ b/Triangulation_on_hyperbolic_surface_2/doc/Triangulation_on_hyperbolic_surface_2/PackageDescription.txt
@@ -27,7 +27,7 @@
 \cgalPkgShortInfoBegin
 \cgalPkgSince{6.1}
 \cgalPkgDependsOn{\ref PkgCombinatorialMaps}
-\cgalPkgBib{cgal:y-t2}
+\cgalPkgBib{cgal:ddpt-thss}
 \cgalPkgLicense{\ref licensesGPL "GPL"}
 \cgalPkgDemo{2D Triangulations on Hyperbolic Surfaces,nofilefornow.zip}
 \cgalPkgShortInfoEnd