diff --git a/echo_server.py b/echo_server.py
index a8f5a3a..136c933 100644
--- a/echo_server.py
+++ b/echo_server.py
@@ -9,7 +9,7 @@ class EchoPipeIOServer(PipeIOServer):
 
 
 if __name__ == "__main__":
-    pipe_io = EchoPipeIOServer()
+    pipe_io = EchoPipeIOServer('in', 'out')
     signal(SIGTERM, lambda a, b: pipe_io.stop())
     signal(SIGINT, lambda a, b: pipe_io.stop())
     print('Running pipe IO server with named pipes:')