diff --git a/Manual/doc_tex/Preliminaries/checks.tex b/Manual/doc_tex/Preliminaries/checks.tex
index d6ae85fef87..3f81c675e6a 100644
--- a/Manual/doc_tex/Preliminaries/checks.tex
+++ b/Manual/doc_tex/Preliminaries/checks.tex
@@ -1,7 +1,7 @@
 
 \ccSetThreeColumns{Failure_behaviour }{}{\hspace*{8.5cm}}
 
-\section{Checks}
+\section{Checks\label{sec:checks}}
 
 Much of the {\cgal} code contains checks. 
 For example, all checks used in the kernel code are prefixed by