diff --git a/doc/doxygen/src/mainpage.md b/doc/doxygen/src/mainpage.md
index 4b14a6c61b..543b40cae3 100644
--- a/doc/doxygen/src/mainpage.md
+++ b/doc/doxygen/src/mainpage.md
@@ -43,8 +43,8 @@ RIOT is developed by an open community that anyone is welcome to join:
  - Regarding critical vulnerabilities we would appreciate if you give us a
    90-days head-start by reporting to security@riot-os.org, before making your
    information publicly available
- - Contact us on IRC for live support and discussions:
-   [irc.freenode.org \#riot-os](irc://irc.freenode.org/riot-os)
+ - Contact us on Matrix for live support and discussions:
+   [riot-os:matrix.org](https://matrix.to/#/#riot-os:matrix.org)
 
 
 The quickest start                                        {#the-quickest-start}