diff --git a/content/en/dev/code.md b/content/en/dev/code.md
index 56927084..fbbba7a8 100644
--- a/content/en/dev/code.md
+++ b/content/en/dev/code.md
@@ -7,11 +7,11 @@ menu:
     parent: dev
 ---
 
-### Code structure {#structure}
+## Code structure {#structure}
 
 The following overview should not be seen as complete or authoritative, but as a rough guidance to help you find your way in the application.
 
-#### Ruby {#ruby}
+### Ruby {#ruby}
 
 `app/controllers`
 : Code that binds business logic to templates
@@ -43,7 +43,7 @@ The following overview should not be seen as complete or authoritative, but as a
 `spec`
 : Automated test suite
 
-#### JavaScript {#javascript}
+### JavaScript {#javascript}
 
 `app/javascript/mastodon`
 : Code for the frontend React.js application
@@ -51,7 +51,7 @@ The following overview should not be seen as complete or authoritative, but as a
 `app/javascript/packs`
 : Code for non-React.js pages
 
-#### CSS and other assets {#assets}
+### CSS and other assets {#assets}
 
 `app/javascript/images`
 : Images
@@ -59,7 +59,7 @@ The following overview should not be seen as complete or authoritative, but as a
 `app/javascript/styles`
 : Code that turns into CSS via Sass
 
-#### Localizations {#localizations}
+### Localizations {#localizations}
 
 `config/locales`
 : Server-side localizations in the YML format
diff --git a/content/en/dev/overview.md b/content/en/dev/overview.md
index b7d64520..7e06284f 100644
--- a/content/en/dev/overview.md
+++ b/content/en/dev/overview.md
@@ -11,9 +11,9 @@ Mastodon is a Ruby on Rails application with a React.js front-end.  It follows s
 
 The best way of working with Mastodon in a development environment is installing all the dependencies on your system, rather than using Docker or Vagrant. You need Ruby, Node.js, PostgreSQL and Redis, which is a pretty standard set of dependencies for Rails applications.
 
-Tutorials for installing these dependencies can be found on the “Installing from source” page in the Running Mastodon section of the documentation. Please keep in mind that root access to a machine running Ubuntu 18.04 is required. After following the installation guide in the Running Mastodon section, see the “Setting up a dev environment” page for further instruction on how to configure your environment for development.
+Tutorials for installing these dependencies can be found on the [Installing from source](../../admin/install/) page in the Running Mastodon section of the documentation. Please keep in mind that root access to a machine running Ubuntu 18.04 is required. After following the installation guide in the Running Mastodon section, see the [Setting up a dev environment](../setup/) page for further instruction on how to configure your environment for development.
 
-### Environments {#environments}
+## Environments {#environments}
 
 An “environment” is a set of configuration values intended for a specific use case. Some environments could be: development, in which you intend to change the code; test, in which you intend to run the automated test suite; staging, which is meant to preview the code to end-users; and production, which is intended to face end-users. Mastodon comes with configurations for development, test and production.