diff --git a/README.md b/README.md
index bed3cbf1..f1010cb1 100644
--- a/README.md
+++ b/README.md
@@ -5,7 +5,7 @@
 
 [![License](https://img.shields.io/badge/license-BSD%203-blue?style=flat-square)](/LICENSE) [![Discord](https://img.shields.io/discord/659129207208804381?label=discord&color=7289DA&style=flat-square)](https://discord.gg/zv8C9F8) [![Code Size]( https://img.shields.io/github/languages/code-size/mue/mue?color=green&label=size&style=flat-square)]()
 <br>
-[![Microsoft Edge](https://img.shields.io/badge/dynamic/json?style=flat-square&label=microsoft%20edge&query=%24.version&url=https%3A%2F%2Fmicrosoftedge.microsoft.com%2Faddons%2Fgetproductdetailsbycrxid%2Faepnglgjfokepefimhbnibfjekidhmja)]() [![](https://img.shields.io/amo/v/mue?label=firefox&style=flat-square)]() [![](https://img.shields.io/chrome-web-store/v/bngmbednanpcfochchhgbkookpiaiaid?label=chrome&style=flat-square)]()
+[![Microsoft Edge](https://img.shields.io/badge/dynamic/json?style=flat-square&label=microsoft%20edge&query=%24.version&url=https%3A%2F%2Fmicrosoftedge.microsoft.com%2Faddons%2Fgetproductdetailsbycrxid%2Faepnglgjfokepefimhbnibfjekidhmja)](https://microsoftedge.microsoft.com/addons/detail/aepnglgjfokepefimhbnibfjekidhmja) [![Firefox](https://img.shields.io/amo/v/mue?label=firefox&style=flat-square)](https://addons.mozilla.org/firefox/addon/mue) [![Chrome](https://img.shields.io/chrome-web-store/v/bngmbednanpcfochchhgbkookpiaiaid?label=chrome&style=flat-square)](https://chrome.google.com/webstore/detail/mue/bngmbednanpcfochchhgbkookpiaiaid)
 
 Mue is a fast, open and free-to-use browser extension that gives a new, fresh and customizable tab page to most modern browsers
 
@@ -63,7 +63,7 @@ Mue is a fast, open and free-to-use browser extension that gives a new, fresh an
 [Microsoft Edge Addons](https://microsoftedge.microsoft.com/addons/detail/aepnglgjfokepefimhbnibfjekidhmja)
 
 ### Opera/Other
-Link: [GitHub Releases](https://github.com/mue/mue/releases)
+[GitHub Releases](https://github.com/mue/mue/releases)
 
 ### Development
 #### Requirements
@@ -79,7 +79,7 @@ Link: [GitHub Releases](https://github.com/mue/mue/releases)
   <li> run <code>yarn start</code> or <code>npm start</code> to start testing
   <li> Code your heart out! (See the sections below for how to build the extension)
 </ol>
-<h2>Building</h5>
+<h2>Building</h2>
 <details>
   <summary><b>Chrome/Edge (Chromium)</b> (Click to expand)</summary>
   <ol>
@@ -95,7 +95,7 @@ Link: [GitHub Releases](https://github.com/mue/mue/releases)
   <ol>
     <li> <code>yarn run build</code> or <code>npm run build</code>
     <li> Rename <code>manifest-opera.json</code> in the "manfiest" folder to <code>manifest.json</code> in "build"
-    <li> Copy <codebackground-opera.js</code> in the "manifest" folder to "build"
+    <li> Copy <code>background-opera.js</code> in the "manifest" folder to "build"
     <li> Visit <code>about://extensions</code> in Opera
     <li> Click <b>Load unpacked extension...</b> (Make sure <b>Developer Mode</b> is on)
     <li> Go to the directory containing Mue and click <b>ok</b>