diff --git a/src/core/util/env.js b/src/core/util/env.js
index 4efb2f0f6dc..feebbfe660c 100644
--- a/src/core/util/env.js
+++ b/src/core/util/env.js
@@ -83,7 +83,7 @@ export const nextTick = (function () {
 
 let _Set
 /* istanbul ignore if */
-if (typeof Set !== 'undefined' && Set.toString().match(/native code/)) {
+if (typeof Set !== 'undefined' && /native code/.test(Set.toString())) {
   // use native Set when available.
   _Set = Set
 } else {
diff --git a/src/platforms/web/runtime/directives/model.js b/src/platforms/web/runtime/directives/model.js
index e641163d2ea..7ebd8505042 100644
--- a/src/platforms/web/runtime/directives/model.js
+++ b/src/platforms/web/runtime/directives/model.js
@@ -20,7 +20,7 @@ if (isIE9) {
 export default {
   bind (el, binding, vnode) {
     if (process.env.NODE_ENV !== 'production') {
-      if (!vnode.tag.match(/input|select|textarea/)) {
+      if (!/input|select|textarea/.test(vnode.tag)) {
         warn(
           `v-model is not supported on element type: <${vnode.tag}>. ` +
           'If you are working with contenteditable, it\'s recommended to ' +