diff --git a/fhem/t/FHEM/00_MQTT2_SERVER/fhem.cfg b/fhem/t/FHEM/00_MQTT2_SERVER/fhem.cfg
index 97c4eb28c..db2f0c1f4 100644
--- a/fhem/t/FHEM/00_MQTT2_SERVER/fhem.cfg
+++ b/fhem/t/FHEM/00_MQTT2_SERVER/fhem.cfg
@@ -1 +1 @@
-define m2s MQTT2_SERVER 1883
+define m2s MQTT2_SERVER 1884