diff --git a/source/_integrations/fritzbox.markdown b/source/_integrations/fritzbox.markdown
index f5bd289502b..b8036ee9455 100644
--- a/source/_integrations/fritzbox.markdown
+++ b/source/_integrations/fritzbox.markdown
@@ -42,6 +42,10 @@ There is currently support for the following device types within Home Assistant:
 
 {% include integrations/config_flow.md %}
 
+<div class='note'>
+The configuration in the UI asks for a username. Starting from FRITZ!OS 7.24 the FRITZ!Box creates a random username for the admin user if you didn't set one yourself. This can be found after logging into the FRITZ!Box and visiting System -> FRITZ!Box Users -> Users. The username starts with "fritz" followed by four random numbers. Under properties on the right it says "created automatically". Prior to FRITZ!OS 7.24 the default username was "admin".
+</div>
+
 ## Switches & Thermostats
 
 To get AVM FRITZ!DECT switches (e.g. FRITZ!DECT 400/440) or thermostats (e.g. FRITZ!DECT 301) follow the [configuration instructions](#configuration) above.