diff --git a/BUILDING.md b/BUILDING.md
index 7b8e73edd3377b..49e52cd28f4e5b 100644
--- a/BUILDING.md
+++ b/BUILDING.md
@@ -19,6 +19,7 @@ file a new issue.
     * [OpenSSL asm support](#openssl-asm-support)
   * [Previous versions of this document](#previous-versions-of-this-document)
 * [Building Node.js on supported platforms](#building-nodejs-on-supported-platforms)
+  * [Installing Prerequisites](#installing-prerequisites)
   * [Unix/macOS](#unixmacos)
     * [Prerequisites](#prerequisites)
     * [Building Node.js](#building-nodejs)
@@ -27,6 +28,7 @@ file a new issue.
     * [Building the documentation](#building-the-documentation)
     * [Building a debug build](#building-a-debug-build)
   * [Windows](#windows)
+    * [Prerequisites](#prerequisites-1)
   * [Android/Android-based devices (e.g. Firefox OS)](#androidandroid-based-devices-eg-firefox-os)
   * [`Intl` (ECMA-402) support](#intl-ecma-402-support)
     * [Default: `small-icu` (English only) support](#default-small-icu-english-only-support)
@@ -215,12 +217,13 @@ Consult previous versions of this document for older versions of Node.js:
 
 ## Building Node.js on supported platforms
 
+#### Installing Prerequisites
 The [bootstrapping guide](https://github.com/nodejs/node/blob/master/tools/bootstrap/README.md)
 explains how to install all prerequisites.
 
 ### Unix/macOS
 
-#### Prerequisites
+##### Prerequisites:
 
 * `gcc` and `g++` >= 6.3 or newer, or
 * macOS: Xcode Command Line Tools >= 8
@@ -461,7 +464,7 @@ $ backtrace
 
 ### Windows
 
-Prerequisites:
+##### Prerequisites:
 
 * [Python 2.7](https://www.python.org/downloads/)
 * The "Desktop development with C++" workload from