diff --git a/htdocs/core/modules/facture/doc/pdf_crabe.modules.php b/htdocs/core/modules/facture/doc/pdf_crabe.modules.php
index 6eb6bb939de..580689d3218 100644
--- a/htdocs/core/modules/facture/doc/pdf_crabe.modules.php
+++ b/htdocs/core/modules/facture/doc/pdf_crabe.modules.php
@@ -1646,6 +1646,18 @@ class pdf_crabe extends ModelePDFFactures
 				$pdf->MultiCell($w, 3, $outputlangs->transnoentities("Project")." : " . (empty($object->project->title)?'':$object->projet->title), '', 'R');
 			}
 		}
+		
+		if (! empty($conf->global->PDF_SHOW_PROJECT))
+		{
+			$object->fetch_projet();
+			if (! empty($object->project->ref))
+			{
+				$posy+=3;
+				$pdf->SetXY($posx,$posy);
+				$pdf->SetTextColor(0, 0, 60);
+				$pdf->MultiCell($w, 3, $outputlangs->transnoentities("ProjectRef")." : " . (empty($object->project->ref)?'':$object->projet->title), '', 'R');
+			}
+		}
 
 		$objectidnext=$object->getIdReplacingInvoice('validated');
 		if ($object->type == 0 && $objectidnext)