diff --git a/sw/lib/ocaml/mapCanvas.ml b/sw/lib/ocaml/mapCanvas.ml
index 8afaca9a3c..d110133a50 100644
--- a/sw/lib/ocaml/mapCanvas.ml
+++ b/sw/lib/ocaml/mapCanvas.ml
@@ -200,7 +200,7 @@ class basic_widget = fun ?(height=800) ?width ?(projection = Mercator) ?georef (
 	
     val adj = GData.adjustment 
 	~value:1. ~lower:0.005 ~upper:10. 
-	~step_incr:0.25 ~page_incr:1.0 ~page_size:1.0 ()
+	~step_incr:0.25 ~page_incr:1.0 ~page_size:0. ()
   
     method info = info