diff --git a/htdocs/core/modules/stocktransfer/doc/pdf_eagle.modules.php b/htdocs/core/modules/stocktransfer/doc/pdf_eagle.modules.php
index d658ee77069..daf4df94196 100644
--- a/htdocs/core/modules/stocktransfer/doc/pdf_eagle.modules.php
+++ b/htdocs/core/modules/stocktransfer/doc/pdf_eagle.modules.php
@@ -319,7 +319,9 @@ class pdf_eagle extends ModelePdfStockTransfer
 				$pdf->SetCreator("Dolibarr ".DOL_VERSION);
 				$pdf->SetAuthor($outputlangs->convToOutputCharset($user->getFullName($outputlangs)));
 				$pdf->SetKeyWords($outputlangs->convToOutputCharset($object->ref)." ".$outputlangs->transnoentities("Shipment"));
-				if (!empty($conf->global->MAIN_DISABLE_PDF_COMPRESSION)) $pdf->SetCompression(false);
+				if (getDolGlobalString('MAIN_DISABLE_PDF_COMPRESSION')) {
+					$pdf->SetCompression(false);
+				}
 
 				$pdf->SetMargins($this->marge_gauche, $this->marge_haute, $this->marge_droite); // Left, Top, Right
 
diff --git a/htdocs/core/modules/stocktransfer/doc/pdf_eagle_proforma.modules.php b/htdocs/core/modules/stocktransfer/doc/pdf_eagle_proforma.modules.php
index 8be1b5e0d9c..de027e2464a 100644
--- a/htdocs/core/modules/stocktransfer/doc/pdf_eagle_proforma.modules.php
+++ b/htdocs/core/modules/stocktransfer/doc/pdf_eagle_proforma.modules.php
@@ -326,7 +326,9 @@ class pdf_eagle_proforma extends ModelePDFCommandes
 				$pdf->SetCreator("Dolibarr ".DOL_VERSION);
 				$pdf->SetAuthor($outputlangs->convToOutputCharset($user->getFullName($outputlangs)));
 				$pdf->SetKeyWords($outputlangs->convToOutputCharset($object->ref)." ".$outputlangs->transnoentities("PdfOrderTitle")." ".$outputlangs->convToOutputCharset($object->thirdparty->name));
-				if (!empty($conf->global->MAIN_DISABLE_PDF_COMPRESSION)) $pdf->SetCompression(false);
+				if (getDolGlobalString('MAIN_DISABLE_PDF_COMPRESSION')) {
+					$pdf->SetCompression(false);
+				}
 
 				$pdf->SetMargins($this->marge_gauche, $this->marge_haute, $this->marge_droite); // Left, Top, Right
 
diff --git a/htdocs/core/modules/supplier_invoice/doc/pdf_canelle.modules.php b/htdocs/core/modules/supplier_invoice/doc/pdf_canelle.modules.php
index dba1c61c7e9..d61e7343eb6 100644
--- a/htdocs/core/modules/supplier_invoice/doc/pdf_canelle.modules.php
+++ b/htdocs/core/modules/supplier_invoice/doc/pdf_canelle.modules.php
@@ -307,7 +307,7 @@ class pdf_canelle extends ModelePDFSuppliersInvoices
 				$pdf->SetCreator("Dolibarr ".DOL_VERSION);
 				$pdf->SetAuthor($outputlangs->convToOutputCharset($user->getFullName($outputlangs)));
 				$pdf->SetKeyWords($outputlangs->convToOutputCharset($object->ref)." ".$outputlangs->transnoentities("PdfInvoiceTitle")." ".$outputlangs->convToOutputCharset($object->thirdparty->name));
-				if (!empty($conf->global->MAIN_DISABLE_PDF_COMPRESSION)) {
+				if (getDolGlobalString('MAIN_DISABLE_PDF_COMPRESSION')) {
 					$pdf->SetCompression(false);
 				}