diff --git a/docs/en/api/wrapper/README.md b/docs/en/api/wrapper/README.md
index 43a241fe1..846c4729d 100644
--- a/docs/en/api/wrapper/README.md
+++ b/docs/en/api/wrapper/README.md
@@ -9,7 +9,8 @@ A `Wrapper` is an object that contains a mounted component or vnode and methods
 `vm` `Component`: this is the `Vue` instance. You can access all the [instance methods and properties of a vm](https://vuejs.org/v2/api/#Instance-Properties) with `wrapper.vm`. This only exists on Vue component wrappers  
 `element` `HTMLElement`: the root DOM node of the wrapper  
 `options` `Object`: Object containing Vue Test Utils options passed to `mount` or `shallowMount`  
-`options.attachedToDom` `Boolean`: True if `attachToDom` was passed to `mount` or `shallowMount`  
+`options.attachedToDocument` `Boolean`: True if `attachedToDocument` was passed to `mount` or `shallowMount`  
+`options.sync` `Boolean`: True if `sync` was not passed as `false` to `mount` or `shallowMount`
 
 - **Methods:**
 
diff --git a/flow/wrapper.flow.js b/flow/wrapper.flow.js
index 3ceb4f6f8..ae24b167a 100644
--- a/flow/wrapper.flow.js
+++ b/flow/wrapper.flow.js
@@ -39,6 +39,5 @@ declare interface BaseWrapper { // eslint-disable-line no-undef
 
 declare type WrapperOptions = { // eslint-disable-line no-undef
     attachedToDocument: boolean,
-    sync: boolean,
-    error?: string
+    sync: boolean
 }
diff --git a/packages/test-utils/types/index.d.ts b/packages/test-utils/types/index.d.ts
index 5d1f4f48e..e097ca593 100644
--- a/packages/test-utils/types/index.d.ts
+++ b/packages/test-utils/types/index.d.ts
@@ -113,6 +113,7 @@ export interface WrapperArray<V extends Vue> extends BaseWrapper {
 
 interface WrapperOptions {
   attachedToDocument: boolean
+  sync: boolean
 }
 
 interface MountOptions<V extends Vue> extends ComponentOptions<V> {
diff --git a/test/specs/mounting-options/snyc.spec.js b/test/specs/mounting-options/sync.spec.js
similarity index 95%
rename from test/specs/mounting-options/snyc.spec.js
rename to test/specs/mounting-options/sync.spec.js
index 1984c7ef8..d387351e0 100644
--- a/test/specs/mounting-options/snyc.spec.js
+++ b/test/specs/mounting-options/sync.spec.js
@@ -15,6 +15,7 @@ describeWithShallowAndMount('options.sync', (mountingMethod) => {
     expect(wrapper.text()).to.equal('hello')
     wrapper.vm.someData = 'world'
     expect(wrapper.text()).to.equal('world')
+    expect(wrapper.options.sync).to.equal(true)
   })
 
   it('sets watchers to sync if undefined', () => {
@@ -29,6 +30,7 @@ describeWithShallowAndMount('options.sync', (mountingMethod) => {
     expect(wrapper.text()).to.equal('hello')
     wrapper.vm.someData = 'world'
     expect(wrapper.text()).to.equal('world')
+    expect(wrapper.options.sync).to.equal(true)
   })
 
   it('handles methods that update watchers', () => {
@@ -102,6 +104,7 @@ describeWithShallowAndMount('options.sync', (mountingMethod) => {
     expect(wrapper.text()).to.equal('hello')
     wrapper.vm.someData = 'world'
     expect(wrapper.text()).to.equal('hello')
+    expect(wrapper.options.sync).to.equal(false)
     setTimeout(() => {
       expect(wrapper.text()).to.equal('world')
       done()