diff --git a/htdocs/core/class/commondocgenerator.class.php b/htdocs/core/class/commondocgenerator.class.php
index 1c5fa9c3180..c349348ed6c 100644
--- a/htdocs/core/class/commondocgenerator.class.php
+++ b/htdocs/core/class/commondocgenerator.class.php
@@ -109,6 +109,21 @@ abstract class CommonDocGenerator
 	public $option_escompte;
 	public $option_credit_note;
 
+	/**
+	 * @var int Tab Title Height
+	 */
+	public $tabTitleHeight;
+
+	/**
+	 * @var array default title fields style
+	 */
+	public $defaultTitlesFieldsStyle;
+
+	/**
+	 * @var array default content fields style
+	 */
+	public $defaultContentsFieldsStyle;
+
 	/**
 	 * @var Societe		Issuer of document
 	 */