diff --git a/src/utils/clickoutside.js b/src/utils/clickoutside.js
index 8122fa2d2..a3d32b009 100644
--- a/src/utils/clickoutside.js
+++ b/src/utils/clickoutside.js
@@ -5,6 +5,7 @@ const nodeList = [];
 const ctx = '@@clickoutsideContext';
 
 let startClick;
+let seed = 0;
 
 !Vue.prototype.$isServer && on(document, 'mousedown', e => (startClick = e));
 
@@ -21,7 +22,8 @@ let startClick;
  */
 export default {
   bind(el, binding, vnode) {
-    const id = nodeList.push(el) - 1;
+    nodeList.push(el);
+    const id = seed++;
     const documentHandler = function(mouseup = {}, mousedown = {}) {
       if (!vnode.context ||
         !mouseup.target ||