diff --git a/akka-contrib/src/test/resources/reference.conf b/akka-contrib/src/test/resources/reference.conf
index ab48718a51..14c5ee3c02 100644
--- a/akka-contrib/src/test/resources/reference.conf
+++ b/akka-contrib/src/test/resources/reference.conf
@@ -3,4 +3,5 @@ akka {
     serialize-creators = on
     serialize-messages = on
   }
-}
\ No newline at end of file
+  remote.netty.tcp.port = 0
+}