diff --git a/zoomify.zmp/params.txt b/zoomify.zmp/params.txt
index 5da1ba80..96313771 100644
--- a/zoomify.zmp/params.txt
+++ b/zoomify.zmp/params.txt
@@ -19,3 +19,7 @@ separator=1
 UseDwn=1
 Sleep=0
 DefHotKey=90
+TILERLEFT=0
+TILERRIGHT=256
+TILERTOP=0
+TILERBOTTOM=256