diff --git a/htdocs/accountancy/journal/purchasesjournal.php b/htdocs/accountancy/journal/purchasesjournal.php
index 905296358f0..521a1c6a74c 100644
--- a/htdocs/accountancy/journal/purchasesjournal.php
+++ b/htdocs/accountancy/journal/purchasesjournal.php
@@ -249,7 +249,11 @@ if ($action == 'export_csv')
 	$purchase_journal = $conf->global->ACCOUNTING_PURCHASE_JOURNAL;
 
 	header('Content-Type: text/csv');
-	header('Content-Disposition: attachment;filename=journal_achats.csv');
+	if ($conf->global->EXPORT_PREFIX)
+		$filename=$conf->global->EXPORT_PREFIX_SPEC."_"."journal_achats.csv";
+	else
+		$filename="journal_achats.csv";
+	header('Content-Disposition: attachment;filename='.$filename);
 
 	if ($conf->global->ACCOUNTING_EXPORT_MODELCSV == 2) 	// Model Cegid Expert Export
 	{