diff --git a/Periodic_2_triangulation_2/doc/Periodic_2_triangulation_2/PackageDescription.txt b/Periodic_2_triangulation_2/doc/Periodic_2_triangulation_2/PackageDescription.txt
index bfdd048ef36..4a476cc2d93 100644
--- a/Periodic_2_triangulation_2/doc/Periodic_2_triangulation_2/PackageDescription.txt
+++ b/Periodic_2_triangulation_2/doc/Periodic_2_triangulation_2/PackageDescription.txt
@@ -72,6 +72,7 @@ both inside and outside the original domain we store additional
 offset information for each vertex of a face. These offsets are models
 of the concept `Periodic_2Offset_2`.
 
+\cgalClassifedRefPages
 
 ## Concepts ##
 
diff --git a/Triangulation/doc/Triangulation/PackageDescription.txt b/Triangulation/doc/Triangulation/PackageDescription.txt
index bee59fb6c26..de9c2b4899f 100644
--- a/Triangulation/doc/Triangulation/PackageDescription.txt
+++ b/Triangulation/doc/Triangulation/PackageDescription.txt
@@ -69,7 +69,7 @@ indexed  in such a way that the neighbor indexed by \f$ i\f$
 is opposite to the vertex with the same index.
 --->
 
-# Reference Pages Sorted by Type #
+\cgalClassifedRefPages
 
 ## Concepts ##