diff --git a/src/addons/addon.hpp b/src/addons/addon.hpp
index 5d91ed83e..b31ecfcc7 100644
--- a/src/addons/addon.hpp
+++ b/src/addons/addon.hpp
@@ -20,6 +20,11 @@
 #ifndef HEADER_ADDON_HPP
 #define HEADER_ADDON_HPP
 
+/**
+  * \defgroup addonsgroup Add-ons
+  * Handles add-ons that can be downloaded
+  */
+
 #include <assert.h>
 #include <string>
 
@@ -28,6 +33,9 @@
 
 class XMLNode;
 
+/**
+  * \ingroup addonsgroup
+  */
 class Addon
 {
 public:
diff --git a/src/addons/addons_manager.hpp b/src/addons/addons_manager.hpp
index b7536ed0b..195eff3aa 100644
--- a/src/addons/addons_manager.hpp
+++ b/src/addons/addons_manager.hpp
@@ -27,6 +27,9 @@
 #include "io/xml_node.hpp"
 #include "utils/synchronised.hpp"
 
+/**
+  * \ingroup addonsgroup
+  */
 class AddonsManager
 {
 private:
diff --git a/src/addons/network_http.hpp b/src/addons/network_http.hpp
index afb337a9b..6d69a5cd5 100644
--- a/src/addons/network_http.hpp
+++ b/src/addons/network_http.hpp
@@ -34,6 +34,9 @@
 
 class XMLNode;
 
+/**
+  * \ingroup addonsgroup
+  */
 class NetworkHttp
 {
 public:
diff --git a/src/addons/news_manager.hpp b/src/addons/news_manager.hpp
index 554fae270..97a42b2a7 100644
--- a/src/addons/news_manager.hpp
+++ b/src/addons/news_manager.hpp
@@ -29,6 +29,9 @@ using namespace irr;
 
 class XMLNode;
 
+/**
+  * \ingroup addonsgroup
+  */
 class NewsManager
 {
 private:
diff --git a/src/addons/request.hpp b/src/addons/request.hpp
index ce0bddb03..eb4483ceb 100644
--- a/src/addons/request.hpp
+++ b/src/addons/request.hpp
@@ -25,7 +25,10 @@
 
 class Addon;
 
-/** Stores a download request. They will be sorted by priorities. */
+/**
+  * Stores a download request. They will be sorted by priorities.
+  * \ingroup addonsgroup
+  */
 class Request
 {
 public:
diff --git a/src/addons/zip.hpp b/src/addons/zip.hpp
index 51a665c87..e49faab2c 100644
--- a/src/addons/zip.hpp
+++ b/src/addons/zip.hpp
@@ -18,7 +18,10 @@
 #ifndef HEADER_ZIP_HPP
 #define HEADER_ZIP_HPP
 
-/** Extract a zip. */
+/**
+  * Extract a zip.
+  * \ingroup addonsgroup
+  */
 bool extract_zip(const std::string &from, const std::string &to);
 
 #endif
diff --git a/src/main.cpp b/src/main.cpp
index 7a0076090..6131c0fd0 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -59,6 +59,8 @@
  
  \section Modules
  
+ \li \ref addonsgroup :
+   Handles add-ons that can be downloaded.
  \li \ref animations :
    This module manages interpolation-based animation (of position, rotation
    and/or scale)