diff --git a/idassigner.py b/idassigner.py
index 8d7f4ca..e3f8b72 100644
--- a/idassigner.py
+++ b/idassigner.py
@@ -105,7 +105,11 @@ def main():
         chapter.tag = "elementtobestripped"
 
     etree.strip_elements(xml_tree, "elementtobestripped")
-    libeoaconvert.write_appinfo(xml_tree, "id_assigner", __version__, "idassign", "Assign XML IDs to elements", datetime.now().strftime("%Y-%m-%d"))
+
+    appinfo_element = xml_tree.xpath("//t:encodingDesc/t:appInfo", namespaces=NS_MAP)[0]
+    appinfo = libeoaconvert.get_appinfo("id_assigner", __version__, "idassign", "Assign XML IDs to elements", datetime.now().strftime("%Y-%m-%d"))
+    appinfo_element.insert(0, appinfo)
+
     output = args.teifile.replace(".xml", "-withids.xml")
     xml_tree.write(output, pretty_print=True, xml_declaration=True, encoding="utf-8")
     logging.info("Wrote %s." % output)