diff --git a/htdocs/societe/class/api_thirdparties.class.php b/htdocs/societe/class/api_thirdparties.class.php
index 9ada3510a4a..658dc6a50e2 100644
--- a/htdocs/societe/class/api_thirdparties.class.php
+++ b/htdocs/societe/class/api_thirdparties.class.php
@@ -379,7 +379,7 @@ class Thirdparties extends DolibarrApi
 
 
       $sql = "SELECT f.facnumber, f.type as factype, re.fk_facture_source, re.rowid, re.amount_ht, re.amount_tva, re.amount_ttc, re.description, re.fk_facture, re.fk_facture_line";
-      $sql .= " FROM llx_societe_remise_except as re, llx_facture as f";
+      $sql .= " FROM ".MAIN_DB_PREFIX."societe_remise_except as re, ".MAIN_DB_PREFIX."facture as f";
       $sql .= " WHERE f.rowid = re.fk_facture_source AND re.fk_soc = ".$id;
       if ($filter == "available")  $sql .= " AND re.fk_facture IS NULL AND re.fk_facture_line IS NULL";
       if ($filter == "used")  $sql .= " AND (re.fk_facture IS NOT NULL OR re.fk_facture_line IS NOT NULL)";