diff --git a/packages/docusaurus-1.x/examples/basics/README.md b/packages/docusaurus-1.x/examples/basics/README.md
index 10e097ee4c..6477a55a50 100644
--- a/packages/docusaurus-1.x/examples/basics/README.md
+++ b/packages/docusaurus-1.x/examples/basics/README.md
@@ -45,7 +45,7 @@ my-docusaurus/
       css/
       img/
     package.json
-    sidebar.json
+    sidebars.json
     siteConfig.js
 ```
 
@@ -100,7 +100,7 @@ title: This Doc Needs To Be Edited
 My new content here..
 ```
 
-1. Refer to that doc's ID in an existing sidebar in `website/sidebar.json`:
+1. Refer to that doc's ID in an existing sidebar in `website/sidebars.json`:
 
 ```javascript
 // Add newly-created-doc to the Getting Started category of docs
diff --git a/packages/docusaurus-1.x/lib/server/__tests__/readMetadata.test.js b/packages/docusaurus-1.x/lib/server/__tests__/readMetadata.test.js
index c89bf237da..0142b83c01 100644
--- a/packages/docusaurus-1.x/lib/server/__tests__/readMetadata.test.js
+++ b/packages/docusaurus-1.x/lib/server/__tests__/readMetadata.test.js
@@ -31,7 +31,7 @@ jest.mock('../env', () => ({
 }));
 
 jest.mock(`${process.cwd()}/siteConfig.js`, () => ({}), {virtual: true});
-jest.mock(`${process.cwd()}/sidebar.json`, () => true, {virtual: true});
+jest.mock(`${process.cwd()}/sidebars.json`, () => true, {virtual: true});
 
 describe('readMetadata', () => {
   describe('readSidebar', () => {