diff --git a/config/config.schema.yaml b/config/config.schema.yaml
index ea46af921b91ff575f98b7adf6fde252d0f68a4d..39427476032e864240785f972383166ecf9da31b 100644
--- a/config/config.schema.yaml
+++ b/config/config.schema.yaml
@@ -10,6 +10,8 @@ properties:
             type: "string"
           homeserverUrl:
             type: "string"
+          port:
+            type: "number"
           presenceInterval:
             type: "number"
           disablePresence: