diff --git a/Surface_mesh_simplification/doc_tex/Surface_mesh_simplification_ref/Count_ratio_stop_predicate.tex b/Surface_mesh_simplification/doc_tex/Surface_mesh_simplification_ref/Count_ratio_stop_predicate.tex
index 60428e168af..29181670d7f 100644
--- a/Surface_mesh_simplification/doc_tex/Surface_mesh_simplification_ref/Count_ratio_stop_predicate.tex
+++ b/Surface_mesh_simplification/doc_tex/Surface_mesh_simplification_ref/Count_ratio_stop_predicate.tex
@@ -50,7 +50,7 @@ of edges drops below a certain ratio.
                     , size_type      initial_count
                     , size_type      current_count
                     ) const ;}
-  {Returns $( ((double)current_count / (double)initial_count) < ratio)$. 
+  {Returns $( ((double)current\_count / (double)initial\_count) < ratio)$. 
   All other parameters are ignored (but exist since this is a generic policy).}
 
 \ccSeeAlso
diff --git a/Surface_mesh_simplification/doc_tex/Surface_mesh_simplification_ref/Count_stop_predicate.tex b/Surface_mesh_simplification/doc_tex/Surface_mesh_simplification_ref/Count_stop_predicate.tex
index 24c23558573..117654251b5 100644
--- a/Surface_mesh_simplification/doc_tex/Surface_mesh_simplification_ref/Count_stop_predicate.tex
+++ b/Surface_mesh_simplification/doc_tex/Surface_mesh_simplification_ref/Count_stop_predicate.tex
@@ -51,7 +51,7 @@ It returns \ccc{true} when the number of current edges drops below a certain thr
                     , size_type      current_count
                     ) const ;
            }
-  {Returns $(current_count < threshold)$. All other parameters are ignored (but exist since this is a generic policy).}
+  {Returns $(current\_count < threshold)$. All other parameters are ignored (but exist since this is a generic policy).}
 
 \ccSeeAlso
 \ccc{CGAL::Surface_mesh_simplification::Count_ratio_stop_predicate<ECM>}