diff --git a/_projects/nook2023.markdown b/_projects/nook2023.markdown
index da9f30f66798348b0f89b76eecb73ce5d6b05482..0b432603a963a99d9c96e1a6b0e21b1a67d8b61f 100644
--- a/_projects/nook2023.markdown
+++ b/_projects/nook2023.markdown
@@ -4,7 +4,6 @@ name:  "NooK 2023"
 image: audimax.png
 twitter: https://twitter.com/nookluebeck
 mastodon: https://social.chaotikum.org/@nook
-matrix: https://app.element.io/#/room/!ZSRkIzrfvZzVfurKPn:matrix.org
 feature_image: "/assets/nookheader.jpg"
 tag: nook23
 contact: