diff --git a/k8s/monitoring/matrix-alertmanager-receiver/config.yaml b/k8s/monitoring/matrix-alertmanager-receiver/config.yaml
index c727ee3..dec5e78 100644
--- a/k8s/monitoring/matrix-alertmanager-receiver/config.yaml
+++ b/k8s/monitoring/matrix-alertmanager-receiver/config.yaml
@@ -8,7 +8,7 @@ http:
 
 # configuration for the Matrix connection
 matrix:
-  homeserver-url: https://janky.bot   # FQDN of the homeserver
+  homeserver-url: https://matrix.janky.bot   # FQDN of the homeserver
   user-id: "@alerts:janky.bot"        # ID of the user used by this service
   access-token: ACCESS_TOKEN                        # Access token for the user ID - will get replaced in an init container
   # define short names for Matrix room ID