diff --git a/src/main/java/org/gcube/portlets/user/td/jsonexportwidget/client/grid/ColumnDataGridPanel.java b/src/main/java/org/gcube/portlets/user/td/jsonexportwidget/client/grid/ColumnDataGridPanel.java
index 5669671..fe91daa 100644
--- a/src/main/java/org/gcube/portlets/user/td/jsonexportwidget/client/grid/ColumnDataGridPanel.java
+++ b/src/main/java/org/gcube/portlets/user/td/jsonexportwidget/client/grid/ColumnDataGridPanel.java
@@ -47,7 +47,7 @@ import com.sencha.gxt.widget.core.client.grid.Grid;
 public class ColumnDataGridPanel extends ContentPanel implements
 		HasSelectionHandlers<ColumnData> {
 	//private static final String GRID_WIDTH  ="524px";
-	private static final String GRID_HEIGHT = "280px";
+	private static final String GRID_HEIGHT = "320px";
 	protected static final ColumnDataProperties props = GWT
 			.create(ColumnDataProperties.class);
 	protected final CheckBoxSelectionModel<ColumnData> sm;