diff --git a/conf/config.yaml b/conf/config.yaml
index 194226d..32bca20 100644
--- a/conf/config.yaml
+++ b/conf/config.yaml
@@ -73,7 +73,7 @@ appservice:
 # Prometheus telemetry config. Requires prometheus-client to be installed.
 metrics:
     enabled: __ENABLE_METRICS__
-    listen_port: __METRICS_LISTEN_PORT__
+    listen_port: __LISTEN_PORT__
 
 # Manhole config.
 manhole: