diff --git a/Triangulation_3/doc_tex/Triangulation_3_ref/Triangulation_3.tex b/Triangulation_3/doc_tex/Triangulation_3_ref/Triangulation_3.tex
index 681b4c3471a..1ef9c87cf5b 100644
--- a/Triangulation_3/doc_tex/Triangulation_3_ref/Triangulation_3.tex
+++ b/Triangulation_3/doc_tex/Triangulation_3_ref/Triangulation_3.tex
@@ -68,6 +68,7 @@ The vertices and faces of the triangulations are accessed through
 \ccc{handles}, \ccc{iterators} and \ccc{circulators}. 
 A handle is a model of the \ccc{Handle} concept, and supports the two
 dereference operators \ccc{operator*} and \ccc{operator->}.  
+A circulator is a model of the concept \ccc{Circulator}.
 Iterators and circulators are bidirectional and non-mutable.
 The edges and facets of the triangulation can also be visited through
 iterators and circulators which are bidirectional and non-mutable.