diff --git a/module/doc/lang/de.php b/module/doc/lang/de.php
index 1a34dfbd57..bc590436f5 100644
--- a/module/doc/lang/de.php
+++ b/module/doc/lang/de.php
@@ -70,15 +70,13 @@ $lang->doc->index            = 'Home';
 $lang->doc->create           = 'Dokument hinzufügen';
 $lang->doc->edit             = 'Bearbeiten';
 $lang->doc->delete           = 'Löschen';
+$lang->doc->createBook       = 'Create Book';
 $lang->doc->browse           = 'Liste';
 $lang->doc->view             = 'Details';
 $lang->doc->diff             = 'Diff';
 $lang->doc->diffAction       = 'Diff Document';
 $lang->doc->sort             = 'Sortierung';
 $lang->doc->manageType       = 'Kategorie verwalten';
-$lang->doc->createBook       = 'Create Book';
-$lang->doc->manageBook       = 'Manage Book';
-$lang->doc->editBook         = 'Edit Book';
 $lang->doc->editType         = 'Bearbeiten';
 $lang->doc->deleteType       = 'Löschen';
 $lang->doc->addType          = 'Hinzufügen';
diff --git a/module/doc/lang/en.php b/module/doc/lang/en.php
index c365e9ade4..e7c83c11c2 100644
--- a/module/doc/lang/en.php
+++ b/module/doc/lang/en.php
@@ -71,15 +71,13 @@ $lang->doc->index            = 'Document Home';
 $lang->doc->create           = 'Create Document';
 $lang->doc->edit             = 'Edit Document';
 $lang->doc->delete           = 'Delete Document';
+$lang->doc->createBook       = 'Create Book';
 $lang->doc->browse           = 'Document List';
 $lang->doc->view             = 'Document Detail';
 $lang->doc->diff             = 'Diff';
 $lang->doc->diffAction       = 'Diff Document';
 $lang->doc->sort             = 'Rank Document';
 $lang->doc->manageType       = 'Manage Category';
-$lang->doc->createBook       = 'Create Book';
-$lang->doc->manageBook       = 'Manage Book';
-$lang->doc->editBook         = 'Edit Book';
 $lang->doc->editType         = 'Edit';
 $lang->doc->deleteType       = 'Delete';
 $lang->doc->addType          = 'Add';
diff --git a/module/doc/lang/fr.php b/module/doc/lang/fr.php
index bf76667bbc..30aca919f7 100644
--- a/module/doc/lang/fr.php
+++ b/module/doc/lang/fr.php
@@ -70,15 +70,13 @@ $lang->doc->index            = 'Accueil Documents';
 $lang->doc->create           = 'Ajouter Document';
 $lang->doc->edit             = 'Editer Document';
 $lang->doc->delete           = 'Supprimer Document';
+$lang->doc->createBook       = 'Create Book';
 $lang->doc->browse           = 'Liste Documents';
 $lang->doc->view             = 'Détail Document';
 $lang->doc->diff             = 'Diff';
 $lang->doc->diffAction       = 'Document Diff';
 $lang->doc->sort             = 'Rang Document';
 $lang->doc->manageType       = 'Gérer Catégories';
-$lang->doc->createBook       = 'Create Book';
-$lang->doc->manageBook       = 'Manage Book';
-$lang->doc->editBook         = 'Edit Book';
 $lang->doc->editType         = 'Editer';
 $lang->doc->deleteType       = 'Supprimer';
 $lang->doc->addType          = 'Ajouter';
diff --git a/module/doc/lang/vi.php b/module/doc/lang/vi.php
index 7b52adc0f0..6a82a7cd24 100644
--- a/module/doc/lang/vi.php
+++ b/module/doc/lang/vi.php
@@ -70,15 +70,13 @@ $lang->doc->index            = 'Document Home';
 $lang->doc->create           = 'Tạo tài liệu';
 $lang->doc->edit             = 'Sửa tài liệu';
 $lang->doc->delete           = 'Xóa tài liệu';
+$lang->doc->createBook       = 'Create Book';
 $lang->doc->browse           = 'Document danh sách';
 $lang->doc->view             = 'Document Detail';
 $lang->doc->diff             = 'Diff';
 $lang->doc->diffAction       = 'Diff tài liệu';
 $lang->doc->sort             = 'Đánh giá tài liệu';
 $lang->doc->manageType       = 'Quản lý danh mục';
-$lang->doc->createBook       = 'Create Book';
-$lang->doc->manageBook       = 'Manage Book';
-$lang->doc->editBook         = 'Edit Book';
 $lang->doc->editType         = 'Sửa';
 $lang->doc->deleteType       = 'Xóa';
 $lang->doc->addType          = 'Thêm';
diff --git a/module/doc/lang/zh-cn.php b/module/doc/lang/zh-cn.php
index adf72ec989..d5251ab839 100644
--- a/module/doc/lang/zh-cn.php
+++ b/module/doc/lang/zh-cn.php
@@ -71,15 +71,13 @@ $lang->doc->index            = '文档主页';
 $lang->doc->create           = '创建文档';
 $lang->doc->edit             = '编辑文档';
 $lang->doc->delete           = '删除文档';
+$lang->doc->createBook       = '创建手册';
 $lang->doc->browse           = '文档列表';
 $lang->doc->view             = '文档详情';
 $lang->doc->diff             = '对比';
 $lang->doc->diffAction       = '对比文档';
 $lang->doc->sort             = '文档排序';
 $lang->doc->manageType       = '维护目录';
-$lang->doc->createBook       = '创建手册';
-$lang->doc->manageBook       = '维护手册';
-$lang->doc->editBook         = '编辑手册';
 $lang->doc->editType         = '编辑目录';
 $lang->doc->deleteType       = '删除目录';
 $lang->doc->addType          = '增加目录';