--- a/MultipleItemSelectionWidget.st	Sun Mar 27 15:13:03 2016 +0200
+++ b/MultipleItemSelectionWidget.st	Sun Mar 27 15:17:48 2016 +0200
@@ -282,7 +282,7 @@
                 (ActionButtonSpec
                    label: 'All'
                    name: 'AddAllButton'
-                   visibilityChannel: allButtonVisibleHolder
+                   visibilityChannel: addAllButtonVisibleHolder
                    translateLabel: true
                    labelChannel: addAllButtonLabelHolder
                    resizeForLabel: false