diff --git a/htdocs/core/modules/facture/doc/pdf_sponge.modules.php b/htdocs/core/modules/facture/doc/pdf_sponge.modules.php
index 03b30d9c8ad..00c28594717 100644
--- a/htdocs/core/modules/facture/doc/pdf_sponge.modules.php
+++ b/htdocs/core/modules/facture/doc/pdf_sponge.modules.php
@@ -2046,7 +2046,7 @@ class pdf_sponge extends ModelePDFFactures
 	 *  @param  int	    	$showaddress    0=no, 1=yes (usually set to 1 for first page, and 0 for next pages)
 	 *  @param  Translate	$outputlangs	Object lang for output
 	 *  @param  Translate	$outputlangsbis	Object lang for output bis
-	 *  @return	array							top shift of linked object lines
+	 *  @return	array						top shift of linked object lines
 	 */
 	protected function _pagehead(&$pdf, $object, $showaddress, $outputlangs, $outputlangsbis = null)
 	{
diff --git a/htdocs/core/modules/product/doc/pdf_standard.modules.php b/htdocs/core/modules/product/doc/pdf_standard.modules.php
index a89ab9fcbba..eba1ee529e0 100644
--- a/htdocs/core/modules/product/doc/pdf_standard.modules.php
+++ b/htdocs/core/modules/product/doc/pdf_standard.modules.php
@@ -703,11 +703,11 @@ class pdf_standard extends ModelePDFProduct
 	 *  @param  int	    	$showaddress    0=no, 1=yes
 	 *  @param  Translate	$outputlangs	Object lang for output
 	 *  @param	string		$titlekey		Translation key to show as title of document
-	 *  @return	void
+	 *  @return	float|int                   Return topshift value
 	 */
 	protected function _pagehead(&$pdf, $object, $showaddress, $outputlangs, $titlekey = "")
 	{
-		global $conf, $langs;
+		global $conf;
 
 		$ltrdirection = 'L';
 		if ($outputlangs->trans("DIRECTION") == 'rtl') {