diff --git a/src/browser/components/group-nav.gts b/src/browser/components/group-nav.gts
index ea521fe9..fe3a2c75 100644
--- a/src/browser/components/group-nav.gts
+++ b/src/browser/components/group-nav.gts
@@ -2,6 +2,7 @@ import Component from '@glimmer/component';
 import { service } from '@ember/service';
 
 import { docsManager } from '../services/docs.ts';
+import { HOME_GROUP } from '../utils.ts';
 
 import type RouterService from '@ember/routing/router-service';
 
@@ -65,8 +66,11 @@ export class GroupNav extends Component<{
 
   get groups() {
     return this.#docs.availableGroups.map((groupName) => {
-      if (groupName === 'root') {
-        return { text: this.homeName, value: '/', href: this.rootURL };
+      // The co-located pages are a group, but they live in the root URL
+      // space rather than under their name, so the link is the app's root
+      // and `@homeName` names it.
+      if (groupName === HOME_GROUP) {
+        return { text: this.homeName, value: HOME_GROUP, href: this.rootURL };
       }
 
       return {
@@ -79,13 +83,11 @@ export class GroupNav extends Component<{
     });
   }
 
-  isActive = (subPath: string) => {
-    if (subPath === '/') return false;
-
+  isActive = (groupName: string) => {
     // The group is derived from the URL by the docs service (rootURL-aware),
     // rather than comparing the group name against currentURL directly
     // (which always failed: 'Docs' never prefixes '/Docs/...').
-    return this.#docs.selectedGroup === subPath;
+    return this.#docs.selectedGroup === groupName;
   };
 
   get activeClass() {
diff --git a/src/browser/utils.ts b/src/browser/utils.ts
index a8690e94..bac6a733 100644
--- a/src/browser/utils.ts
+++ b/src/browser/utils.ts
@@ -4,6 +4,14 @@ import { getOwner } from '@ember/owner';
 import type { Page, PageTree } from '../types.ts';
 import type Owner from '@ember/owner';
 
+/**
+ * The co-located pages' group (app/templates, src/templates), as the build
+ * names it (`displayName` in build/plugins/setup.js's `homeSource`). Its
+ * pages live in the root URL space rather than under the group's name, so
+ * its nav link is the app's root.
+ */
+export const HOME_GROUP = 'Home';
+
 export function isPageTree(x: Page | PageTree): x is PageTree {
   return 'pages' in x;
 }
diff --git a/test-apps/markdown-only/tests/application-test.ts b/test-apps/markdown-only/tests/application-test.ts
index fdaadf5e..a273d165 100644
--- a/test-apps/markdown-only/tests/application-test.ts
+++ b/test-apps/markdown-only/tests/application-test.ts
@@ -29,28 +29,24 @@ module("All Links", function (hooks) {
       return new Promise((resolve) => setTimeout(resolve, 250));
     });
 
+    // The co-located pages' link is the app root now, rather than `/Home`
+    // where nothing is served — so the crawl no longer visits `/Home`, and
+    // the root sends it on to the first group.
     assert.verifySteps([
-      "/Home",
       "/Docs",
       "/my-folder-name/bar.md",
       "/my-folder-name/foo.md",
-      "/Home",
-      "/my-folder-name/bar.md",
-      "/Home",
+      "/Docs",
       "/Docs/sub-folder/ember-primitives.md",
       "/Docs/sub-folder/ember-resources.md",
-      "/Home",
-      "/my-folder-name/foo.md",
       "/Docs",
       "/my-folder-name/foo.md",
       "/my-folder-name/bar.md",
       "/Docs",
-      "/Home",
-      "/Home",
       "/Docs/sub-folder/ember-resources.md",
-      "/Docs",
       "/Docs/sub-folder/ember-primitives.md",
-      "/Home",
+      "/Docs",
+      "/Docs",
     ]);
   });
 });
diff --git a/test-apps/multiple-docs-routes/app/templates/application.gts b/test-apps/multiple-docs-routes/app/templates/application.gts
index b8894424..c2052ded 100644
--- a/test-apps/multiple-docs-routes/app/templates/application.gts
+++ b/test-apps/multiple-docs-routes/app/templates/application.gts
@@ -38,7 +38,7 @@ const SideNav: TOC<{ Element: HTMLElement }> = <template>
 
 <template>
   <header style="display: flex; align-items: baseline; gap: 1rem;">
-    <GroupNav />
+    <GroupNav @homeName="Docs Home" />
   </header>
 
   <div class="big-layout">
diff --git a/test-apps/multiple-docs-routes/tests/multiple-docs-routes-test.gts b/test-apps/multiple-docs-routes/tests/multiple-docs-routes-test.gts
index 7d1d731f..0e3dae36 100644
--- a/test-apps/multiple-docs-routes/tests/multiple-docs-routes-test.gts
+++ b/test-apps/multiple-docs-routes/tests/multiple-docs-routes-test.gts
@@ -2,10 +2,6 @@ import { currentURL, render, visit } from "@ember/test-helpers";
 import { module, test } from "qunit";
 import { setupApplicationTest, setupRenderingTest } from "ember-qunit";
 
-// build-time resolution of a demos() alias: this import is compiled
-// like any other module in the app graph
-import Hello from "#demos/kit/hello";
-
 import { docsManager } from "kolay";
 import {
   manifest as demosManifest,
@@ -14,6 +10,10 @@ import {
 } from "virtual:kolay/docs/demos";
 import { meta as guidesMeta } from "virtual:kolay/docs/guides";
 
+// build-time resolution of a demos() alias: this import is compiled
+// like any other module in the app graph
+import Hello from "#demos/kit/hello";
+
 module("Multiple docs routes", function (hooks) {
   setupApplicationTest(hooks);
 
@@ -70,6 +70,19 @@ module("Multiple docs routes", function (hooks) {
     assert.dom("h1").containsText("Welcome home");
   });
 
+  test("the co-located pages' nav link is the app root, and @homeName names it", async function (assert) {
+    await visit("/welcome/home.md");
+
+    assert
+      .dom('header nav a[href="/"]')
+      .exists("links at the root, where the co-located pages live")
+      .hasText("Docs Home", "and @homeName is what names it")
+      .hasClass("active", "and reads active while reading one of them");
+    assert
+      .dom('header nav a[href="/Home"]')
+      .doesNotExist("not the group name: no page is served under it");
+  });
+
   test("a .md page renders from the scoped /help mount (group: guides)", async function (assert) {
     await visit("/help/getting-started/intro.md");