diff --git a/htdocs/core/modules/commande/doc/pdf_einstein.modules.php b/htdocs/core/modules/commande/doc/pdf_einstein.modules.php
index 495e292d3f6..c28ccb38e7e 100644
--- a/htdocs/core/modules/commande/doc/pdf_einstein.modules.php
+++ b/htdocs/core/modules/commande/doc/pdf_einstein.modules.php
@@ -959,7 +959,15 @@ class pdf_einstein extends ModelePDFCommandes
 		$posy+=1;
 		$pdf->SetFont('','', $default_font_size - 1);
 
-		$posy+=5;
+		if ($object->ref_client)
+		{
+			$posy+=5;
+			$pdf->SetXY($posx,$posy);
+			$pdf->SetTextColor(0,0,60);
+			$pdf->MultiCell(100, 3, $outputlangs->transnoentities("RefCustomer")." : " . $outputlangs->convToOutputCharset($object->ref_client), '', 'R');
+		}
+
+		$posy+=4;
 		$pdf->SetXY($posx,$posy);
 		$pdf->SetTextColor(0,0,60);
 		$pdf->MultiCell(100, 3, $outputlangs->transnoentities("OrderDate")." : " . dol_print_date($object->date,"%d %b %Y",false,$outputlangs,true), '', 'R');
diff --git a/htdocs/core/modules/facture/doc/pdf_crabe.modules.php b/htdocs/core/modules/facture/doc/pdf_crabe.modules.php
index f86af8d8c25..ec5b6330407 100755
--- a/htdocs/core/modules/facture/doc/pdf_crabe.modules.php
+++ b/htdocs/core/modules/facture/doc/pdf_crabe.modules.php
@@ -1099,6 +1099,14 @@ class pdf_crabe extends ModelePDFFactures
 		$posy+=1;
 		$pdf->SetFont('','', $default_font_size - 1);
 
+		if ($object->ref_client)
+		{
+			$posy+=5;
+			$pdf->SetXY($posx,$posy);
+			$pdf->SetTextColor(0,0,60);
+			$pdf->MultiCell(100, 3, $outputlangs->transnoentities("RefCustomer")." : " . $outputlangs->convToOutputCharset($object->ref_client), '', 'R');
+		}
+
 		$objectidnext=$object->getIdReplacingInvoice('validated');
 		if ($object->type == 0 && $objectidnext)
 		{