diff --git a/src/main/java/org/gcube/portlets/user/td/client/ribbon/CurationToolBar.java b/src/main/java/org/gcube/portlets/user/td/client/ribbon/CurationToolBar.java
index 94cfcba..5a143fc 100644
--- a/src/main/java/org/gcube/portlets/user/td/client/ribbon/CurationToolBar.java
+++ b/src/main/java/org/gcube/portlets/user/td/client/ribbon/CurationToolBar.java
@@ -227,9 +227,10 @@ public class CurationToolBar {
 
 		structureLayout.setWidget(0, 3, addColumnButton);
 		structureLayout.getFlexCellFormatter().setRowSpan(0, 3, 2);
-		deleteColumnButton.disable();
+	
 		deleteColumnButton = new TextButton("Delete Column",
 				TabularDataResources.INSTANCE.columnDelete32());
+		deleteColumnButton.disable();
 		deleteColumnButton.setScale(ButtonScale.LARGE);
 		deleteColumnButton.setIconAlign(IconAlign.TOP);
 		deleteColumnButton.setToolTip("Delete column");