diff --git a/htdocs/core/modules/contract/doc/pdf_strato.modules.php b/htdocs/core/modules/contract/doc/pdf_strato.modules.php
index c06882fa121..77904beac0b 100644
--- a/htdocs/core/modules/contract/doc/pdf_strato.modules.php
+++ b/htdocs/core/modules/contract/doc/pdf_strato.modules.php
@@ -463,17 +463,20 @@ class pdf_strato extends ModelePDFContract
 
 		if (empty($hidebottom))
 		{
-			$pdf->SetXY(20,230);
-			$pdf->MultiCell(66,5, $outputlangs->transnoentities("ContactNameAndSignature", $this->emetteur->name),0,'L',0);
+			$posmiddle = $this->marge_gauche + round(($this->page_largeur - $this->marge_gauche - $this->marge_droite)/2);
+			$posy = $tab_top + $tab_height + 3 + 3;
 
-			$pdf->SetXY(20,235);
-			$pdf->MultiCell(80,25, '', 1);
+			$pdf->SetXY($this->marge_gauche, $posy);
+			$pdf->MultiCell($posmiddle - $this->marge_gauche - 5, 5, $outputlangs->transnoentities("ContactNameAndSignature", $this->emetteur->name),0,'L',0);
 
-			$pdf->SetXY(110,230);
-			$pdf->MultiCell(80,5, $outputlangs->transnoentities("ContactNameAndSignature", $this->recipient->name),0,'L',0);
+			$pdf->SetXY($this->marge_gauche, $posy + 5);
+			$pdf->MultiCell($posmiddle - $this->marge_gauche - 5, 20, '', 1);
 
-			$pdf->SetXY(110,235);
-			$pdf->MultiCell(80,25, '', 1);
+			$pdf->SetXY($posmiddle + 5, $posy);
+			$pdf->MultiCell($this->page_largeur-$this->marge_droite - $posmiddle - 5, 5, $outputlangs->transnoentities("ContactNameAndSignature", $this->recipient->name),0,'L',0);
+
+			$pdf->SetXY($posmiddle + 5, $posy + 5);
+			$pdf->MultiCell($this->page_largeur-$this->marge_droite - $posmiddle - 5, 20, '', 1);
 		}
 	}