diff --git a/src/main/java/org/gcube/portlets/user/td/csvexportwidget/client/grid/ColumnDataGridPanel.java b/src/main/java/org/gcube/portlets/user/td/csvexportwidget/client/grid/ColumnDataGridPanel.java
index 598bcec..e133e5c 100644
--- a/src/main/java/org/gcube/portlets/user/td/csvexportwidget/client/grid/ColumnDataGridPanel.java
+++ b/src/main/java/org/gcube/portlets/user/td/csvexportwidget/client/grid/ColumnDataGridPanel.java
@@ -111,7 +111,7 @@ public class ColumnDataGridPanel extends ContentPanel implements
 		
 		
 		VerticalLayoutContainer con = new VerticalLayoutContainer();
-		con.add(grid, new VerticalLayoutData(-1, -1,new Margins(1)));
+		con.add(grid, new VerticalLayoutData(-1, -1,new Margins(0)));
 		setWidget(con);
 
 	}