diff --git a/htdocs/core/modules/livraison/doc/pdf_typhon.modules.php b/htdocs/core/modules/livraison/doc/pdf_typhon.modules.php
index 891d5fce6fa..3d3e2a1d26e 100644
--- a/htdocs/core/modules/livraison/doc/pdf_typhon.modules.php
+++ b/htdocs/core/modules/livraison/doc/pdf_typhon.modules.php
@@ -627,7 +627,7 @@ class pdf_typhon extends ModelePDFDeliveryOrder
 	/**
 	 *   Show miscellaneous information (payment mode, payment term, ...)
 	 *
-	 *   @param		TCPDF		&$pdf     		Object PDF
+	 *   @param		TCPDF		$pdf     		Object PDF
 	 *   @param		Object		$object			Object to show
 	 *   @param		int			$posy			Y
 	 *   @param		Translate	$outputlangs	Langs object
@@ -656,7 +656,7 @@ class pdf_typhon extends ModelePDFDeliveryOrder
 	/**
 	 *   Show table for lines
 	 *
-	 *   @param		TCPDF		&$pdf     		Object PDF
+	 *   @param		TCPDF		$pdf     		Object PDF
 	 *   @param		string		$tab_top		Top position of table
 	 *   @param		string		$tab_height		Height of table (rectangle)
 	 *   @param		int			$nexY			Y (not used)
@@ -722,7 +722,7 @@ class pdf_typhon extends ModelePDFDeliveryOrder
 	/**
 	 *  Show top header of page.
 	 *
-	 *  @param	TCPDF		&$pdf     		Object PDF
+	 *  @param	TCPDF		$pdf     		Object PDF
 	 *  @param  Object		$object     	Object to show
 	 *  @param  int	    	$showaddress    0=no, 1=yes
 	 *  @param  Translate	$outputlangs	Object lang for output
@@ -896,7 +896,7 @@ class pdf_typhon extends ModelePDFDeliveryOrder
 	/**
 	 *  Show footer of page. Need this->emetteur object
      *
-	 *  @param	TCPDF		&$pdf     			PDF
+	 *  @param	TCPDF		$pdf     			PDF
 	 *  @param	Object		$object				Object to show
 	 *  @param	Translate	$outputlangs		Object lang for output
 	 *  @param	int			$hidefreetext		1=Hide free text