diff --git a/aio/src/app/app.component.ts b/aio/src/app/app.component.ts
index 2025253f1b..b9d2bab8fd 100644
--- a/aio/src/app/app.component.ts
+++ b/aio/src/app/app.component.ts
@@ -160,8 +160,8 @@ export class AppComponent implements OnInit {
     ]).subscribe(([versionInfo, versions]) => {
       // TODO(pbd): consider whether we can lookup the stable and next versions from the internet
       const computedVersions: NavigationNode[] = [
-        { title: 'next 版', url: 'https://next.angular.io/' },
-        { title: '同步翻译版', url: 'https://angular.cn/' },
+        { mode: 'next', title: 'next 版', url: 'https://next.angular.io/' },
+        { mode: 'stable', title: '同步翻译版', url: 'https://angular.cn/' },
       ];
       if (this.deployment.mode === 'archive') {
         computedVersions.push({ title: `v${versionInfo.major}` });
@@ -171,7 +171,7 @@ export class AppComponent implements OnInit {
       // Find the current version - eithers title matches the current deployment mode
       // or its title matches the major version of the current version info
       this.currentDocVersion = this.docVersions.find(version =>
-        version.title === this.deployment.mode || version.title === `v${versionInfo.major}`)!;
+        version.mode === this.deployment.mode || version.title === `v${versionInfo.major}`)!;
       this.currentDocVersion.title += ` (v${versionInfo.raw})`;
     });
 
diff --git a/aio/src/app/navigation/navigation.model.ts b/aio/src/app/navigation/navigation.model.ts
index c15afecac2..68e52ecabe 100644
--- a/aio/src/app/navigation/navigation.model.ts
+++ b/aio/src/app/navigation/navigation.model.ts
@@ -9,6 +9,7 @@ export interface NavigationNode {
   // always have `title`.
   title: string;
 
+  mode?: string;
   url?: string;
   tooltip?: string;
   hidden?: boolean;
@@ -18,7 +19,7 @@ export interface NavigationNode {
   children?: NavigationNode[];
 }
 
-export type NavigationResponse = {__versionInfo: VersionInfo } & { [name: string]: NavigationNode[]|VersionInfo };
+export type NavigationResponse = { __versionInfo: VersionInfo } & { [name: string]: NavigationNode[] | VersionInfo };
 
 export interface NavigationViews {
   [name: string]: NavigationNode[];