diff --git a/htdocs/core/modules/commande/doc/pdf_eratosthene.modules.php b/htdocs/core/modules/commande/doc/pdf_eratosthene.modules.php
index 6037714f6db..16f29f95dcb 100644
--- a/htdocs/core/modules/commande/doc/pdf_eratosthene.modules.php
+++ b/htdocs/core/modules/commande/doc/pdf_eratosthene.modules.php
@@ -338,9 +338,12 @@ class pdf_eratosthene extends ModelePDFCommandes
 				}
 				$pdf->SetFont(pdf_getPDFFont($outputlangs));
 				// Set path to the background PDF File
-				if (!empty($conf->global->MAIN_ADD_PDF_BACKGROUND))
-				{
-					$pagecount = $pdf->setSourceFile($conf->mycompany->multidir_output[$object->entity].'/'.$conf->global->MAIN_ADD_PDF_BACKGROUND);
+				if (!empty($conf->global->MAIN_ADD_PDF_BACKGROUND)) {
+                    $logodir = $conf->mycompany->dir_output;
+                    if (!empty($conf->mycompany->multidir_output[$object->entity])) {
+                        $logodir = $conf->mycompany->multidir_output[$object->entity];
+                    }
+					$pagecount = $pdf->setSourceFile($logodir.'/'.$conf->global->MAIN_ADD_PDF_BACKGROUND);
 					$tplidx = $pdf->importPage(1);
 				}