diff --git a/src/core/wrapper/layout.js b/src/core/wrapper/layout.js
index 1f572f735..dc3b972b6 100644
--- a/src/core/wrapper/layout.js
+++ b/src/core/wrapper/layout.js
@@ -399,23 +399,23 @@ BI.Layout = BI.inherit(BI.Widget, {
                 oldEndVnode = oldCh[--oldEndIdx];
             } else if (sameVnode(oldStartVnode, newStartVnode, oldStartIdx, newStartIdx)) {
                 updated = this.patchItem(oldStartVnode, newStartVnode, oldStartIdx) || updated;
-                children[oldStartVnode.key == null ? this._getChildName(oldStartIdx) : oldStartVnode.key] = this._children[this._getChildName(oldStartIdx)];
+                children[oldStartVnode.key == null ? oldStartIdx : oldStartVnode.key] = this._children[this._getChildName(oldStartIdx)];
                 oldStartVnode = oldCh[++oldStartIdx];
                 newStartVnode = newCh[++newStartIdx];
             } else if (sameVnode(oldEndVnode, newEndVnode, oldEndIdx, newEndIdx)) {
                 updated = this.patchItem(oldEndVnode, newEndVnode, oldEndIdx) || updated;
-                children[oldEndVnode.key == null ? this._getChildName(oldEndIdx) : oldEndVnode.key] = this._children[this._getChildName(oldEndIdx)];
+                children[oldEndVnode.key == null ? oldEndIdx : oldEndVnode.key] = this._children[this._getChildName(oldEndIdx)];
                 oldEndVnode = oldCh[--oldEndIdx];
                 newEndVnode = newCh[--newEndIdx];
             } else if (sameVnode(oldStartVnode, newEndVnode)) {
                 updated = this.patchItem(oldStartVnode, newEndVnode, oldStartIdx) || updated;
-                children[oldStartVnode.key == null ? this._getChildName(oldStartIdx) : oldStartVnode.key] = this._children[this._getChildName(oldStartIdx)];
+                children[oldStartVnode.key == null ? oldStartIdx : oldStartVnode.key] = this._children[this._getChildName(oldStartIdx)];
                 insertBefore(oldStartVnode, oldEndVnode, true);
                 oldStartVnode = oldCh[++oldStartIdx];
                 newEndVnode = newCh[--newEndIdx];
             } else if (sameVnode(oldEndVnode, newStartVnode)) {
                 updated = this.patchItem(oldEndVnode, newStartVnode, oldEndIdx) || updated;
-                children[oldEndVnode.key == null ? this._getChildName(oldEndIdx) : oldEndVnode.key] = this._children[this._getChildName(oldEndIdx)];
+                children[oldEndVnode.key == null ? oldEndIdx : oldEndVnode.key] = this._children[this._getChildName(oldEndIdx)];
                 insertBefore(oldEndVnode, oldStartVnode);
                 oldEndVnode = oldCh[--oldEndIdx];
                 newStartVnode = newCh[++newStartIdx];
@@ -429,7 +429,7 @@ BI.Layout = BI.inherit(BI.Widget, {
                     BI.each(oldCh, function (index, child) {
                         if (child && sameVnode(child, newStartVnode)) {
                             updated = self.patchItem(sameOldVnode, newStartVnode, index) || updated;
-                            children[sameOldVnode.key == null ? self._getChildName(index) : sameOldVnode.key] = self._children[self._getChildName(index)];
+                            children[sameOldVnode.key == null ? index : sameOldVnode.key] = self._children[self._getChildName(index)];
                             oldCh[index] = undefined;
                             insertBefore(sameOldVnode, oldStartVnode);
                         }
@@ -492,9 +492,9 @@ BI.Layout = BI.inherit(BI.Widget, {
         function insertBefore (insert, before, isNext, index) {
             insert = self._getOptions(insert);
             before = before && self._getOptions(before);
-            var insertKey = BI.isKey(insert.key) ? insert.key : self._getChildName(index);
+            var insertKey = BI.isKey(insert.key) ? insert.key : index;
             if (before && children[before.key]) {
-                var beforeKey = BI.isKey(before.key) ? before.key : self._getChildName(index);
+                var beforeKey = BI.isKey(before.key) ? before.key : index;
                 var next;
                 if (isNext) {
                     next = children[beforeKey].element.next();