diff --git a/README.md b/README.md
index 2ebb0162f9..39fec39524 100644
--- a/README.md
+++ b/README.md
@@ -27,6 +27,8 @@ at https://riot.im/packages/keys/riot.asc
 Note that for the security of your chats will need to serve Riot
 over HTTPS. Mayor browsers also do not allow you to use VoIP/video
 chats over HTTP, as WebRTC is only usable over HTTPS.
+An exception of this is localhost, which usually is alos trusted in
+browsers.
 
 ### Installation Steps for Debian Stretch
 1. Add the repository to your sources.list using either of the following two options: