diff --git a/Algebraic_foundations/doc/Algebraic_foundations/CGAL/number_utils.h b/Algebraic_foundations/doc/Algebraic_foundations/CGAL/number_utils.h
index 49f3c0d0326..4483bc3e1df 100644
--- a/Algebraic_foundations/doc/Algebraic_foundations/CGAL/number_utils.h
+++ b/Algebraic_foundations/doc/Algebraic_foundations/CGAL/number_utils.h
@@ -22,7 +22,7 @@ namespace CGAL {
 ///
  
 ///  The template function `compare` compares the first argument with respect to
-///  the second, i.e. it returns `CGAL::LARGER` if \f$x\f$ is larger then \f$y\f$.
+///  the second, i.e.\ it returns `CGAL::LARGER` if \f$x\f$ is larger then \f$y\f$.
 ///  In case the argument types `NT1` and `NT2` differ, 
 ///  `compare` is performed with the semantic of the type determined via
 ///  `Coercion_traits`.
@@ -130,9 +130,9 @@ namespace CGAL {
 ///
  
 ///  
-///  The function `integral_division` (a.k.a. exact division or division without remainder) 
+///  The function `integral_division` (a.k.a.\ exact division or division without remainder) 
 ///  maps ring elements \f$(x,y)\f$ to ring element \f$z\f$ such that \f$x = yz\f$ if such a \f$z\f$ 
-///  exists (i.e. if \f$x\f$ is divisible by \f$y\f$). Otherwise the effect of invoking 
+///  exists (i.e.\ if \f$x\f$ is divisible by \f$y\f$). Otherwise the effect of invoking 
 ///  this operation is undefined. Since the ring represented is an integral domain, 
 ///  \f$z\f$ is uniquely defined if it exists.
 ///  In case the argument types `NT1` and `NT2` differ,