diff --git a/packages/docusaurus-theme-common/src/utils/__tests__/routesUtils.test.ts b/packages/docusaurus-theme-common/src/utils/__tests__/routesUtils.test.ts
index 5f0e5d27c9..9e398dbcac 100644
--- a/packages/docusaurus-theme-common/src/utils/__tests__/routesUtils.test.ts
+++ b/packages/docusaurus-theme-common/src/utils/__tests__/routesUtils.test.ts
@@ -69,7 +69,7 @@ describe('routesUtils findHomePageRoute', () => {
               {path: '/b', exact: true},
               {
                 path: '/',
-                exact: false,
+                exact: undefined,
                 routes: [{path: '/c', exact: true}, homePage],
               },
             ],
diff --git a/packages/docusaurus-theme-common/src/utils/routesUtils.ts b/packages/docusaurus-theme-common/src/utils/routesUtils.ts
index 16057d947e..278b85d518 100644
--- a/packages/docusaurus-theme-common/src/utils/routesUtils.ts
+++ b/packages/docusaurus-theme-common/src/utils/routesUtils.ts
@@ -23,7 +23,7 @@ export function findHomePageRoute({
   }
 
   function isHomeParentRoute(route: Route): boolean {
-    return route.path === baseUrl && route.exact === false;
+    return route.path === baseUrl && !route.exact;
   }
 
   function doFindHomePageRoute(routes: Route[]): Route | undefined {