diff --git a/bdnex/conf/ComicInfo.xsd b/bdnex/conf/ComicInfo.xsd
index 244a989..0fa3a10 100755
--- a/bdnex/conf/ComicInfo.xsd
+++ b/bdnex/conf/ComicInfo.xsd
@@ -2,7 +2,7 @@
 <xs:schema elementFormDefault="qualified" xmlns:xs="http://www.w3.org/2001/XMLSchema">
     <xs:element name="ComicInfo" nillable="true" type="ComicInfo" />
     <xs:complexType name="ComicInfo">
-        <xs:sequence>
+        <xs:all>
             <xs:element minOccurs="0" maxOccurs="1" default="" name="Title" type="xs:string" />
             <xs:element minOccurs="0" maxOccurs="1" default="" name="Series" type="xs:string" />
             <xs:element minOccurs="0" maxOccurs="1" default="" name="Number" type="xs:string" />
@@ -41,7 +41,7 @@
             <xs:element minOccurs="0" maxOccurs="1" default="Unknown" name="AgeRating" type="AgeRating" />
             <xs:element minOccurs="0" maxOccurs="1" name="Pages" type="ArrayOfComicPageInfo" />
             <xs:element minOccurs="0" maxOccurs="1" name="CommunityRating" type="Rating" />
-        </xs:sequence>
+        </xs:all>
     </xs:complexType>
     <xs:simpleType name="YesNo">
         <xs:restriction base="xs:string">
diff --git a/bdnex/conf/bdgest_mapping.json b/bdnex/conf/bdgest_mapping.json
index fa23991..a12695b 100644
--- a/bdnex/conf/bdgest_mapping.json
+++ b/bdnex/conf/bdgest_mapping.json
@@ -5,7 +5,8 @@
     "Editeur": "Publisher",
     "Format": "Format",
     "Language": "LanguageISO",
-    "Scénario": "Letterer",
+    "Lettrage": "Letterer",
+    "Scénario": "Writer",
     "Titre": "Title",
     "Tome": "Volume",
     "author": "Writer",
diff --git a/bdnex/lib/comicrack.py b/bdnex/lib/comicrack.py
index fd99595..2f1a9f4 100644
--- a/bdnex/lib/comicrack.py
+++ b/bdnex/lib/comicrack.py
@@ -5,6 +5,8 @@
 import rarfile
 import zipfile
 import logging
+import json
+import xmlschema
 
 from pkg_resources import resource_filename
 
@@ -22,20 +24,13 @@ def __init__(self, input_filename=None, comic_info=None):
     def comicInfo_xml_create(self):
         self.logger.info("Create ComicInfo.xml")
 
-        mytree = ET.parse(COMICINFO_TEMPLATE)
-        myroot = mytree.getroot()
-
-        for element in myroot[1][0]:
-            metadata_key = element.attrib['name']
-            if metadata_key in self.comic_info.keys():
-                if element.attrib["type"] == "xs:string":
-                    element.attrib['default'] = str(self.comic_info[metadata_key])
-                elif element.attrib["type"] == "xs:int":
-                    element.attrib['default'] = str(self.comic_info[metadata_key])
-
         tmpdir = tempfile.mkdtemp()
         comic_info_fp = os.path.join(tmpdir, 'ComicInfo.xml')
-        mytree.write(comic_info_fp, encoding='UTF-8', xml_declaration=True)
+
+        schema = xmlschema.XMLSchema(COMICINFO_TEMPLATE)
+        data = json.dumps(self.comic_info)
+        tmp_xml = xmlschema.from_json(data, preserve_root=True, schema=schema)
+        ET.ElementTree(tmp_xml).write(comic_info_fp, encoding='UTF-8', xml_declaration=True)
 
         return comic_info_fp
 
diff --git a/setup.py b/setup.py
index bce7ea5..c12b049 100755
--- a/setup.py
+++ b/setup.py
@@ -56,6 +56,7 @@ def _read(fn):
         'tenacity',
         'opencv-contrib-python-headless',
         'pandas',
+        'xmlschema',
     ],
 
     extras_require={