diff --git a/src/entries/web-runtime.js b/src/entries/web-runtime.js
index 8e806ac7..89fe9540 100644
--- a/src/entries/web-runtime.js
+++ b/src/entries/web-runtime.js
@@ -1,6 +1,6 @@
 import Vue from '../runtime/index'
-import { update } from '../runtime/dom-updater/index'
+import { patch } from '../runtime/dom-backend/index'
 
-Vue.prototype.__update__ = update
+Vue.prototype.__patch__ = patch
 
 export default Vue
diff --git a/src/runtime/dom-updater/index.js b/src/runtime/dom-backend/index.js
similarity index 80%
rename from src/runtime/dom-updater/index.js
rename to src/runtime/dom-backend/index.js
index b58ffec4..cca78e97 100644
--- a/src/runtime/dom-updater/index.js
+++ b/src/runtime/dom-backend/index.js
@@ -1,4 +1,4 @@
-import createUpdater from '../vdom/create-updater'
+import createPatchFunction from '../vdom/patch'
 import * as nodeOps from './node-ops'
 import classes from './modules/class'
 import style from './modules/style'
@@ -7,7 +7,7 @@ import attrs from './modules/attrs'
 import events from './modules/events'
 import directives from './modules/directives'
 
-export const update = createUpdater({
+export const patch = createPatchFunction({
   nodeOps,
   modules: [
     classes,
diff --git a/src/runtime/dom-updater/modules/attrs.js b/src/runtime/dom-backend/modules/attrs.js
similarity index 100%
rename from src/runtime/dom-updater/modules/attrs.js
rename to src/runtime/dom-backend/modules/attrs.js
diff --git a/src/runtime/dom-updater/modules/class.js b/src/runtime/dom-backend/modules/class.js
similarity index 100%
rename from src/runtime/dom-updater/modules/class.js
rename to src/runtime/dom-backend/modules/class.js
diff --git a/src/runtime/dom-updater/modules/directives.js b/src/runtime/dom-backend/modules/directives.js
similarity index 100%
rename from src/runtime/dom-updater/modules/directives.js
rename to src/runtime/dom-backend/modules/directives.js
diff --git a/src/runtime/dom-updater/modules/events.js b/src/runtime/dom-backend/modules/events.js
similarity index 100%
rename from src/runtime/dom-updater/modules/events.js
rename to src/runtime/dom-backend/modules/events.js
diff --git a/src/runtime/dom-updater/modules/pre.js b/src/runtime/dom-backend/modules/pre.js
similarity index 100%
rename from src/runtime/dom-updater/modules/pre.js
rename to src/runtime/dom-backend/modules/pre.js
diff --git a/src/runtime/dom-updater/modules/props.js b/src/runtime/dom-backend/modules/props.js
similarity index 100%
rename from src/runtime/dom-updater/modules/props.js
rename to src/runtime/dom-backend/modules/props.js
diff --git a/src/runtime/dom-updater/modules/style.js b/src/runtime/dom-backend/modules/style.js
similarity index 100%
rename from src/runtime/dom-updater/modules/style.js
rename to src/runtime/dom-backend/modules/style.js
diff --git a/src/runtime/dom-updater/node-ops.js b/src/runtime/dom-backend/node-ops.js
similarity index 100%
rename from src/runtime/dom-updater/node-ops.js
rename to src/runtime/dom-backend/node-ops.js
diff --git a/src/runtime/instance/lifecycle.js b/src/runtime/instance/lifecycle.js
index 9c857a89..f64e3936 100644
--- a/src/runtime/instance/lifecycle.js
+++ b/src/runtime/instance/lifecycle.js
@@ -58,11 +58,11 @@ export function lifecycleMixin (Vue) {
       callHook(this, 'beforeUpdate')
     }
     if (!this._vnode) {
-      // Vue.prototype.__update__ is injected in entry points
+      // Vue.prototype.__patch__ is injected in entry points
       // based on the rendering backend used.
-      this.$el = this.__update__(this.$el, vnode)
+      this.$el = this.__patch__(this.$el, vnode)
     } else {
-      this.$el = this.__update__(this._vnode, vnode)
+      this.$el = this.__patch__(this._vnode, vnode)
     }
     this._vnode = vnode
     if (this._mounted) {
diff --git a/src/runtime/vdom/create-updater.js b/src/runtime/vdom/patch.js
similarity index 99%
rename from src/runtime/vdom/create-updater.js
rename to src/runtime/vdom/patch.js
index b19848b9..b1a84807 100644
--- a/src/runtime/vdom/create-updater.js
+++ b/src/runtime/vdom/patch.js
@@ -36,7 +36,7 @@ function createKeyToOldIdx (children, beginIdx, endIdx) {
   return map
 }
 
-export default function createUpdater (backend) {
+export default function createPatchFunction (backend) {
   let i, j
   const cbs = {}