diff --git a/it_IT.ISO8859-15/books/Makefile b/it_IT.ISO8859-15/books/Makefile
index 6bee2d7230..0f97424134 100644
--- a/it_IT.ISO8859-15/books/Makefile
+++ b/it_IT.ISO8859-15/books/Makefile
@@ -1,9 +1,10 @@
 # $FreeBSD$
 
 SUBDIR = handbook
+SUBDIR+= unix-introduction
 
 ROOT_SYMLINKS= handbook
 
 DOC_PREFIX?= ${.CURDIR}/../..
 
 .include "${DOC_PREFIX}/share/mk/doc.project.mk"
diff --git a/it_IT.ISO8859-15/books/unix-introduction/chapters.ent b/it_IT.ISO8859-15/books/unix-introduction/chapters.ent
index 2c2f72a8b8..52487b300a 100644
--- a/it_IT.ISO8859-15/books/unix-introduction/chapters.ent
+++ b/it_IT.ISO8859-15/books/unix-introduction/chapters.ent
@@ -1,27 +1,27 @@
 <!--
      The FreeBSD Italian Documentation Project
 
      Crea le entities per ogni capitolo dell'Introduzione a Unix.
      Ogni entity &egrave; chiamata chap.foo, dove foo &egrave; il valore
      dell'attributo id di quel capitolo, e corrisponde al nome della directory
      nella quale il file sgml del capitolo &egrave; salvato.
 
      I capitoli devono essere listati nell'ordine in cui sono referenziati.
 
      $FreeBSD$
 -->
 
-<!ENTITY chap.preface                 SYSTEM "preface/preface.sgml">
+<!ENTITY chap.preface                 SYSTEM "preface/chapter.sgml">
 <!ENTITY chap.history                 SYSTEM "history/chapter.sgml">
 <!ENTITY chap.structure               SYSTEM "structure/chapter.sgml">
 <!ENTITY chap.getting-started         SYSTEM "getting-started/chapter.sgml">
 <!ENTITY chap.system-resource         SYSTEM "system-resource/chapter.sgml">
 <!ENTITY chap.shells                  SYSTEM "shells/chapter.sgml">
 <!ENTITY chap.special-features        SYSTEM "special-features/chapter.sgml">
 <!ENTITY chap.text-processing         SYSTEM "text-processing/chapter.sgml">
 <!ENTITY chap.commands                SYSTEM "commands/chapter.sgml">
 <!ENTITY chap.shell-programming       SYSTEM "shell-programming/chapter.sgml">
 <!ENTITY chap.editors                 SYSTEM "editors/chapter.sgml">
 <!ENTITY chap.command-summary         SYSTEM "command-summary/chapter.sgml">
 <!ENTITY chap.bibliography            SYSTEM "bibliography/chapter.sgml">
-<!ENTITY chap.glossary                SYSTEM "glossary/chapter.sgml">
\ No newline at end of file
+<!ENTITY chap.glossary                SYSTEM "glossary/chapter.sgml">