diff --git a/packages/docusaurus-plugin-content-docs/src/index.ts b/packages/docusaurus-plugin-content-docs/src/index.ts
index bf00372608..7899c72e9b 100644
--- a/packages/docusaurus-plugin-content-docs/src/index.ts
+++ b/packages/docusaurus-plugin-content-docs/src/index.ts
@@ -342,7 +342,7 @@ export default function pluginContentDocs(
         const versionsRegex = new RegExp(versionsNames.join('|'), 'i');
 
         const routes = await Promise.all(
-          metadataItems.map(async (metadataItem, i) => {
+          metadataItems.map(async (metadataItem) => {
             const isDocsHomePage =
               metadataItem.id.replace(versionsRegex, '').replace(/^\//, '') ===
               options.homePageId;
@@ -353,10 +353,6 @@ export default function pluginContentDocs(
                   ? ''
                   : metadataItem.version!) ?? '';
 
-              // To show the sidebar, get the sidebar key of available sibling item.
-              metadataItem.sidebar = (
-                metadataItems[i - 1] ?? metadataItems[i + 1]
-              ).sidebar;
               const docsBaseMetadata = createDocsBaseMetadata(
                 metadataItem.version!,
               );