diff --git a/htdocs/core/modules/facture/doc/doc_generic_invoice_odt.modules.php b/htdocs/core/modules/facture/doc/doc_generic_invoice_odt.modules.php
index a6e28214335..0c3e9685861 100644
--- a/htdocs/core/modules/facture/doc/doc_generic_invoice_odt.modules.php
+++ b/htdocs/core/modules/facture/doc/doc_generic_invoice_odt.modules.php
@@ -3,7 +3,7 @@
  * Copyright (C) 2012		Regis Houssin		<regis.houssin@inodbox.com>
  * Copyright (C) 2014		Marcos García		<marcosgdf@gmail.com>
  * Copyright (C) 2016		Charlie Benke		<charlie@patas-monkey.com>
- * Copyright (C) 2018		Frédéric France		<frederic.france@netlogic.fr>
+ * Copyright (C) 2018-2019  Frédéric France		<frederic.france@netlogic.fr>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -118,7 +118,7 @@ class doc_generic_invoice_odt extends ModelePDFFactures
 		$form = new Form($this->db);
 
 		$texte = $this->description.".<br>\n";
-		$texte .= '<form action="'.$_SERVER["PHP_SELF"].'" method="POST">';
+		$texte .= '<form action="'.$_SERVER["PHP_SELF"].'" method="POST" enctype="multipart/form-data">';
 		$texte .= '<input type="hidden" name="token" value="'.newToken().'">';
 		$texte .= '<input type="hidden" name="action" value="setModuleOptions">';
 		$texte .= '<input type="hidden" name="param1" value="FACTURE_ADDON_PDF_ODT_PATH">';
@@ -176,7 +176,11 @@ class doc_generic_invoice_odt extends ModelePDFFactures
    			}
    			$texte .= '</div>';
 		}
-
+        // Add input to upload a new template file.
+        $texte.= '<div>'.$langs->trans("UploadNewTemplate").' <input type="file" name="uploadfile">';
+        $texte.= '<input type="hidden" value="FACTURE_ADDON_PDF_ODT_PATH" name="keyforuploaddir">';
+        $texte.= '<input type="submit" class="button" value="'.dol_escape_htmltag($langs->trans("Upload")).'" name="upload">';
+        $texte.= '</div>';
 		$texte .= '</td>';
 
 		$texte .= '<td rowspan="2" class="tdtop hideonsmartphone">';