diff --git a/htdocs/core/modules/contract/doc/pdf_strato.modules.php b/htdocs/core/modules/contract/doc/pdf_strato.modules.php
index 2dc2acbcb6d..24dcf8743b0 100644
--- a/htdocs/core/modules/contract/doc/pdf_strato.modules.php
+++ b/htdocs/core/modules/contract/doc/pdf_strato.modules.php
@@ -370,7 +370,7 @@ class pdf_strato extends ModelePDFContract
 							$pdf->writeHTMLCell(0, 0, $curX, $curY, dol_concatdesc($txtpredefinedservice, dol_concatdesc($txt, $desc)), 0, 1, 0);
 							$pageposafter=$pdf->getPage();
 							$posyafter=$pdf->GetY();
-							
+
 							if ($posyafter > ($this->page_hauteur - ($heightforfooter+$heightforfreetext+$heightforinfotot)))	// There is no space left for total+free text
 							{
 								if ($i == ($nblines-1))	// No more lines, and no space left to show total, so we create a new page
@@ -394,7 +394,7 @@ class pdf_strato extends ModelePDFContract
 
 						$nexY = $pdf->GetY() + 2;
 						$pageposafter=$pdf->getPage();
-						
+
 						$pdf->setPage($pageposbefore);
 						$pdf->setTopMargin($this->marge_haute);
 						$pdf->setPageOrientation('', 1, 0);	// The only function to edit the bottom margin of current page to set it.
@@ -423,7 +423,7 @@ class pdf_strato extends ModelePDFContract
 							$pdf->setPage($pagenb);
 							$pdf->setPageOrientation('', 1, 0);	// The only function to edit the bottom margin of current page to set it.
 						}
-						
+
 						if (isset($object->lines[$i+1]->pagebreak) && $object->lines[$i+1]->pagebreak)
 						{
 							if ($pagenb == 1)
@@ -447,7 +447,7 @@ class pdf_strato extends ModelePDFContract
 				if ($pagenb == 1)
 				{
 					$this->_tableau($pdf, $tab_top, $this->page_hauteur - $tab_top - $heightforinfotot - $heightforfreetext - $heightforfooter, 0, $outputlangs, 0, 0);
-					$this->_tab_signature($pdf, $tab_top, $this->page_hauteur - $tab_top - $heightforinfotot - $heightforfreetext - $heightforfooter, $outputlangs);
+					$this->tabSignature($pdf, $tab_top, $this->page_hauteur - $tab_top - $heightforinfotot - $heightforfreetext - $heightforfooter, $outputlangs);
 					$bottomlasttab=$this->page_hauteur - $heightforfooter - $heightforfooter + 1;
 				}
 				else
@@ -456,7 +456,7 @@ class pdf_strato extends ModelePDFContract
 					$this->tabSignature($pdf, $tab_top_newpage, $this->page_hauteur - $tab_top_newpage - $heightforinfotot - $heightforfreetext - $heightforfooter, $outputlangs);
 					$bottomlasttab=$this->page_hauteur - $heightforfooter - $heightforfooter + 1;
 				}
-				
+
 				$this->_pagefoot($pdf,$object,$outputlangs);
 				if (method_exists($pdf,'AliasNbPages')) $pdf->AliasNbPages();