diff --git a/src/widget/multitree/multi.tree.combo.js b/src/widget/multitree/multi.tree.combo.js
index c3e7e6ecd..399df7e02 100644
--- a/src/widget/multitree/multi.tree.combo.js
+++ b/src/widget/multitree/multi.tree.combo.js
@@ -187,9 +187,9 @@ BI.MultiTreeCombo = BI.inherit(BI.Single, {
             var checked = this.getSearcher().hasChecked();
             var val = {
                 type: BI.Selection.Multi,
-                value: checked ? this.getValue() : {}
+                value: checked ? {1: 1} : {}
             };
-            this.getSearcher().setState(val);
+            this.getSearcher().setState(checked ? BI.Selection.Multi : BI.Selection.None);
             this.getCounter().setButtonChecked(val);
             self.fireEvent(BI.MultiTreeCombo.EVENT_CLICK_ITEM);
         });
diff --git a/src/widget/multitree/multi.tree.insert.combo.js b/src/widget/multitree/multi.tree.insert.combo.js
index bbb36c267..bedabf7fe 100644
--- a/src/widget/multitree/multi.tree.insert.combo.js
+++ b/src/widget/multitree/multi.tree.insert.combo.js
@@ -204,9 +204,9 @@ BI.MultiTreeInsertCombo = BI.inherit(BI.Single, {
             var checked = this.getSearcher().hasChecked();
             var val = {
                 type: BI.Selection.Multi,
-                value: checked ? this.getValue() : {}
+                value: checked ? {1: 1} : {}
             };
-            this.getSearcher().setState(val);
+            this.getSearcher().setState(checked ? BI.Selection.Multi : BI.Selection.None);
             this.getCounter().setButtonChecked(val);
             self.fireEvent(BI.MultiTreeInsertCombo.EVENT_CLICK_ITEM, self.combo.getValue());
         });
diff --git a/src/widget/multitree/multi.tree.list.combo.js b/src/widget/multitree/multi.tree.list.combo.js
index 7ae6b0a85..c291e3fb2 100644
--- a/src/widget/multitree/multi.tree.list.combo.js
+++ b/src/widget/multitree/multi.tree.list.combo.js
@@ -212,9 +212,9 @@ BI.MultiTreeListCombo = BI.inherit(BI.Single, {
             var checked = this.getSearcher().hasChecked();
             var val = {
                 type: BI.Selection.Multi,
-                value: checked ? this.getValue() : {}
+                value: checked ? {1: 1} : {}
             };
-            this.getSearcher().setState(val);
+            this.getSearcher().setState(checked ? BI.Selection.Multi : BI.Selection.None);
             this.getCounter().setButtonChecked(val);
             self.fireEvent(BI.MultiTreeListCombo.EVENT_CLICK_ITEM, self.combo.getValue());
         });