diff --git a/Manual/doc_tex/Manual/manual-3.5.bib b/Manual/doc_tex/Manual/manual-3.5.bib
index 0e51fac24e1..8dd1406be5b 100644
--- a/Manual/doc_tex/Manual/manual-3.5.bib
+++ b/Manual/doc_tex/Manual/manual-3.5.bib
@@ -50,7 +50,7 @@
 }
 
 
-@inbook{cgal:h-af-09
+@incollection{cgal:h-af-09
 , author =  "Michael Hemmer"
 , title =   "Algebraic Foundations"
 , publisher =  "{CGAL Editorial Board}"