diff --git a/Manual/doc_tex/cgal_manual.tex b/Manual/doc_tex/cgal_manual.tex
index 87c751ca28e..a2958c96f0f 100644
--- a/Manual/doc_tex/cgal_manual.tex
+++ b/Manual/doc_tex/cgal_manual.tex
@@ -31,7 +31,7 @@
 
     \lcTex{\entryright{\listofrefpages}}
 
-    \packageleft{Introduction}
+    \packageleftright{Introduction}{Introduction_ref}
 
 
 % Algebraic Foundations:
@@ -39,7 +39,7 @@
 
     \entry{\part{Arithmetic and Algebra\label{Part::AlgebraicFoundations}}}
 
-    \packageleft{Preliminaries}
+    \packageleftright{Preliminaries}{Preliminaries_ref}
 
     \packageleftright{Algebraic_foundations}{Algebraic_foundations_ref}
     \packageleftright{NumberTypeSupport}{NumberTypeSupport_ref}