diff --git a/htdocs/core/modules/askpricesupplier/doc/pdf_aurore.modules.php b/htdocs/core/modules/askpricesupplier/doc/pdf_aurore.modules.php
index db021bcb89e..6729ea2a60c 100644
--- a/htdocs/core/modules/askpricesupplier/doc/pdf_aurore.modules.php
+++ b/htdocs/core/modules/askpricesupplier/doc/pdf_aurore.modules.php
@@ -490,7 +490,7 @@ class pdf_aurore extends ModelePDFAskPriceSupplier
 					if ($posYAfterImage > $posYAfterDescription) $nexY=$posYAfterImage;
 
 					// Add line
-					if (! empty($conf->global->MAIN_PDF_DASH_BETWEEN_LINES) && $i < ($nblignes - 1))
+					if ($conf->global->MAIN_PDF_DASH_BETWEEN_LINES && $i < ($nblignes - 1))
 					{
 						$pdf->setPage($pageposafter);
 						$pdf->SetLineStyle(array('dash'=>'1,1','color'=>array(210,210,210)));