diff --git a/admin/controleurs/admin_book_room.php b/admin/controleurs/admin_book_room.php
index 8897b1c9..2ba16621 100644
--- a/admin/controleurs/admin_book_room.php
+++ b/admin/controleurs/admin_book_room.php
@@ -121,14 +121,14 @@
 $multisite = Settings::get("module_multisite") == "Oui";
 if($multisite)
   $sql = "SELECT r.id,room_name,area_name,sitename
-          FROM ((`grr_room` r JOIN `grr_area` a ON r.area_id = a.id)
-          JOIN grr_j_site_area ON a.id = id_area)
-          JOIN grr_site s ON s.id = id_site
+          FROM ((`".TABLE_PREFIX."_room` r JOIN `".TABLE_PREFIX."_area` a ON r.area_id = a.id)
+          JOIN ".TABLE_PREFIX."_j_site_area ON a.id = id_area)
+          JOIN ".TABLE_PREFIX."_site s ON s.id = id_site
           WHERE r.who_can_book = 0
           ORDER BY room_name";
 else
   $sql = "SELECT r.id,room_name,area_name
-          FROM `grr_room` r JOIN `grr_area` a ON r.area_id = a.id
+          FROM `".TABLE_PREFIX."_room` r JOIN `".TABLE_PREFIX."_area` a ON r.area_id = a.id
           WHERE r.who_can_book = 0
           ORDER BY room_name";
 $res = grr_sql_query($sql);