diff --git a/packages/react-navigation/src/navigators/__tests__/__snapshots__/StackNavigator-test.js.snap b/packages/react-navigation/src/navigators/__tests__/__snapshots__/StackNavigator-test.js.snap
index bc1023e8..41e4687f 100644
--- a/packages/react-navigation/src/navigators/__tests__/__snapshots__/StackNavigator-test.js.snap
+++ b/packages/react-navigation/src/navigators/__tests__/__snapshots__/StackNavigator-test.js.snap
@@ -104,6 +104,7 @@ exports[`StackNavigator applies correct values when headerRight is present 1`] =
           "state": Object {
             "index": 0,
             "isTransitioning": false,
+            "key": "StackRouterRoot",
             "routes": Array [
               Object {
                 "key": "Init-id-0-1",
@@ -340,6 +341,7 @@ exports[`StackNavigator renders successfully 1`] = `
           "state": Object {
             "index": 0,
             "isTransitioning": false,
+            "key": "StackRouterRoot",
             "routes": Array [
               Object {
                 "key": "Init-id-0-0",
diff --git a/packages/react-navigation/src/routers/__tests__/Routers-test.js b/packages/react-navigation/src/routers/__tests__/Routers-test.js
index 7e33cfe1..fd14be12 100644
--- a/packages/react-navigation/src/routers/__tests__/Routers-test.js
+++ b/packages/react-navigation/src/routers/__tests__/Routers-test.js
@@ -131,6 +131,7 @@ test('Handles deep action', () => {
   const expectedState = {
     index: 0,
     isTransitioning: false,
+    key: 'StackRouterRoot',
     routes: [
       {
         key: 'Init-id-0-2',
diff --git a/packages/react-navigation/src/routers/__tests__/StackRouter-test.js b/packages/react-navigation/src/routers/__tests__/StackRouter-test.js
index 3e29723b..ed9b35e2 100644
--- a/packages/react-navigation/src/routers/__tests__/StackRouter-test.js
+++ b/packages/react-navigation/src/routers/__tests__/StackRouter-test.js
@@ -354,6 +354,7 @@ describe('StackRouter', () => {
     expect(initState).toEqual({
       index: 0,
       isTransitioning: false,
+      key: 'StackRouterRoot',
       routes: [{ key: 'Init-id-0', routeName: 'foo' }],
     });
     const pushedState = TestRouter.getStateForAction(
@@ -476,6 +477,7 @@ describe('StackRouter', () => {
     expect(state).toEqual({
       index: 0,
       isTransitioning: false,
+      key: 'StackRouterRoot',
       routes: [
         {
           key: 'Init-id-0',
@@ -503,6 +505,7 @@ describe('StackRouter', () => {
     expect(state3).toEqual({
       index: 0,
       isTransitioning: false,
+      key: 'StackRouterRoot',
       routes: [
         {
           key: 'Init-id-0',
@@ -564,6 +567,7 @@ describe('StackRouter', () => {
     expect(state).toEqual({
       index: 0,
       isTransitioning: false,
+      key: 'StackRouterRoot',
       routes: [
         {
           key: 'Init-id-0',
@@ -591,6 +595,7 @@ describe('StackRouter', () => {
     expect(state3).toEqual({
       index: 0,
       isTransitioning: false,
+      key: 'StackRouterRoot',
       routes: [
         {
           key: 'Init-id-0',
@@ -664,6 +669,7 @@ describe('StackRouter', () => {
     expect(state).toEqual({
       index: 0,
       isTransitioning: false,
+      key: 'StackRouterRoot',
       routes: [
         {
           key: 'Init-id-0',
@@ -687,6 +693,7 @@ describe('StackRouter', () => {
     expect(state).toEqual({
       index: 0,
       isTransitioning: false,
+      key: 'StackRouterRoot',
       routes: [
         {
           key: state && state.routes[0].key,
@@ -1061,7 +1068,6 @@ describe('StackRouter', () => {
     expect(state && state.routes[0]).toEqual(
       expect.objectContaining({
         routeName: 'Bar',
-        type: undefined,
       })
     );
   });