diff --git a/htdocs/core/modules/supplier_order/doc/pdf_muscadet.modules.php b/htdocs/core/modules/supplier_order/doc/pdf_muscadet.modules.php
index 8863aeffe47..5082c14a144 100644
--- a/htdocs/core/modules/supplier_order/doc/pdf_muscadet.modules.php
+++ b/htdocs/core/modules/supplier_order/doc/pdf_muscadet.modules.php
@@ -254,7 +254,7 @@ class pdf_muscadet extends ModelePDFSuppliersOrders
 				}
 				$realpath = '';
 				foreach ($objphoto->liste_photos($dir, 1) as $key => $obj) {
-					if (empty($conf->global->CAT_HIGH_QUALITY_IMAGES)) {		// If CAT_HIGH_QUALITY_IMAGES not defined, we use thumb if defined and then original photo
+					if (!getDolGlobalInt('CAT_HIGH_QUALITY_IMAGES')) {		// If CAT_HIGH_QUALITY_IMAGES not defined, we use thumb if defined and then original photo
 						if ($obj['photo_vignette']) {
 							$filename = $obj['photo_vignette'];
 						} else {