diff --git a/data/cosin.toml b/data/cosin.toml
index 4a1fa12..bc6ad16 100644
--- a/data/cosin.toml
+++ b/data/cosin.toml
@@ -46,7 +46,7 @@ schedule_day_urls = [
   "https://www.cosin.ch/fahrplan/2017/schedule/3.html"]
 
 
-irc_server = "irc://irc.chaostreff.ch/"
+irc_server = "ircs://irc.chaostreff.ch:6601/"
 irc_channel = "#cosin"