diff --git a/module/doc/control.php b/module/doc/control.php
index a804fb1998..79eed2d430 100644
--- a/module/doc/control.php
+++ b/module/doc/control.php
@@ -223,16 +223,18 @@ class doc extends control
      * Delete a library.
      *
      * @param  int    $libID
-     * @param  string $confirm  yes|no
+     * @param  string $confirm yes|no
+     * @param  string $from    lib|book
      * @access public
      * @return void
      */
-    public function deleteLib($libID, $confirm = 'no')
+    public function deleteLib($libID, $confirm = 'no', $from = 'lib')
     {
         if($libID == 'product' or $libID == 'execution') die();
         if($confirm == 'no')
         {
-            die(js::confirm($this->lang->doc->confirmDeleteLib, $this->createLink('doc', 'deleteLib', "libID=$libID&confirm=yes")));
+            $deleteTip = $from == 'book' ? $this->lang->doc->confirmDeleteBook : $this->lang->doc->confirmDeleteLib;
+            die(js::confirm($deleteTip, $this->createLink('doc', 'deleteLib', "libID=$libID&confirm=yes")));
         }
         else
         {
diff --git a/module/doc/lang/de.php b/module/doc/lang/de.php
index 034d90d78a..d0d1663b6a 100644
--- a/module/doc/lang/de.php
+++ b/module/doc/lang/de.php
@@ -175,6 +175,7 @@ $lang->doc->mail->edit->title   = "%s edited document #%s:%s";
 
 $lang->doc->confirmDelete        = "Möchten Sie dieses Dokument löschen?";
 $lang->doc->confirmDeleteLib     = "Möchten Sie diese Bibliothek löschen?";
+$lang->doc->confirmDeleteBook    = "Do you want to delete this book?";
 $lang->doc->confirmDeleteChapter = "Do you want to delete this chapter?";
 $lang->doc->errorEditSystemDoc   = "System Dokumentenbibliothek darf nicht geändert werden.";
 $lang->doc->errorEmptyProduct    = "Kein {$lang->productCommon}. Kann nicht erstellt werden.";
diff --git a/module/doc/lang/en.php b/module/doc/lang/en.php
index 4e800e0c96..85839271bf 100644
--- a/module/doc/lang/en.php
+++ b/module/doc/lang/en.php
@@ -180,6 +180,7 @@ $lang->doc->mail->edit->title   = "%s edited document #%s:%s";
 
 $lang->doc->confirmDelete        = "Do you want to delete this document?";
 $lang->doc->confirmDeleteLib     = "Do you want to delete this document library?";
+$lang->doc->confirmDeleteBook    = "Do you want to delete this book?";
 $lang->doc->confirmDeleteChapter = "Do you want to delete this chapter?";
 $lang->doc->errorEditSystemDoc   = "You don't have to change system document library.";
 $lang->doc->errorEmptyProduct    = "No {$lang->productCommon}. It cannot be created.";
diff --git a/module/doc/lang/fr.php b/module/doc/lang/fr.php
index 4c56b8e7c5..3776a77a2d 100644
--- a/module/doc/lang/fr.php
+++ b/module/doc/lang/fr.php
@@ -175,6 +175,7 @@ $lang->doc->mail->edit->title   = "%s edited document #%s:%s";
 
 $lang->doc->confirmDelete        = "Voulez-vous supprimer ce document ?";
 $lang->doc->confirmDeleteLib     = "Voulez-vous supprimer cette Bibliothèque ?";
+$lang->doc->confirmDeleteBook    = "Do you want to delete this book?";
 $lang->doc->confirmDeleteChapter = "Do you want to delete this chapter?";
 $lang->doc->errorEditSystemDoc   = "Vous n'avez pas besoin de changer de système de Bibliothèque.";
 $lang->doc->errorEmptyProduct    = "Aucun {$lang->productCommon}. Il ne peut pas être créé.";
diff --git a/module/doc/lang/vi.php b/module/doc/lang/vi.php
index db2dd8f74c..5753c6396e 100644
--- a/module/doc/lang/vi.php
+++ b/module/doc/lang/vi.php
@@ -176,6 +176,7 @@ $lang->doc->mail->edit->title   = "%s edited document #%s:%s";
 $lang->doc->confirmDelete        = "Bạn có muốn xóa this document?";
 $lang->doc->confirmDeleteLib     = "Bạn có muốn xóa this document library?";
 $lang->doc->confirmDeleteChapter = "Do you want to delete this chapter?";
+$lang->doc->confirmDeleteBook    = "Do you want to delete this book?";
 $lang->doc->errorEditSystemDoc   = "You don't have to change system document library.";
 $lang->doc->errorEmptyProduct    = "Không có {$lang->productCommon}. It cannot be created.";
 $lang->doc->errorEmptyProject    = "Không có {$lang->executionCommon}. It cannot be created.";
diff --git a/module/doc/lang/zh-cn.php b/module/doc/lang/zh-cn.php
index 14231d8ed0..00413b84c0 100644
--- a/module/doc/lang/zh-cn.php
+++ b/module/doc/lang/zh-cn.php
@@ -180,6 +180,7 @@ $lang->doc->mail->edit->title   = "%s编辑了文档 #%s:%s";
 
 $lang->doc->confirmDelete        = "您确定删除该文档吗？";
 $lang->doc->confirmDeleteLib     = "您确定删除该文档库吗？";
+$lang->doc->confirmDeleteBook    = "您确定删除该手册吗？";
 $lang->doc->confirmDeleteChapter = "您确定删除该章节吗？";
 $lang->doc->errorEditSystemDoc   = "系统文档库无需修改。";
 $lang->doc->errorEmptyProduct    = "没有{$lang->productCommon}，无法创建文档";