diff --git a/Periodic_3_triangulation_3/doc_tex/Periodic_3_triangulation_3_ref/Periodic_3_triangulation_3.tex b/Periodic_3_triangulation_3/doc_tex/Periodic_3_triangulation_3_ref/Periodic_3_triangulation_3.tex
index f6ce2211071..382ce2a5e02 100644
--- a/Periodic_3_triangulation_3/doc_tex/Periodic_3_triangulation_3_ref/Periodic_3_triangulation_3.tex
+++ b/Periodic_3_triangulation_3/doc_tex/Periodic_3_triangulation_3_ref/Periodic_3_triangulation_3.tex
@@ -265,7 +265,7 @@ might lead to problems when modifying the triangulation later.
 \ccGlue
 \ccMethod{void convert_to_27_sheeted_covering() const;}
 {Converts the current triangulation into the same periodic
-  triangulation in 1-sheeted covering.}
+  triangulation in 27-sheeted covering.}
 
 \end{ccAdvanced}