diff --git a/htdocs/accountancy/journal/sellsjournal.php b/htdocs/accountancy/journal/sellsjournal.php
index c0251291964..7605d54825c 100644
--- a/htdocs/accountancy/journal/sellsjournal.php
+++ b/htdocs/accountancy/journal/sellsjournal.php
@@ -271,7 +271,7 @@ if ($action == 'export_csv')
 	$sell_journal = $conf->global->ACCOUNTING_SELL_JOURNAL;
 
 	header('Content-Type: text/csv');
-	if ($conf->global->EXPORT_PREFIX)
+	if ($conf->global->EXPORT_PREFIX_SPEC)
 		$filename=$conf->global->EXPORT_PREFIX_SPEC."_"."journal_ventes.csv";
 	else
 		$filename="journal_ventes.csv";