diff --git a/start.sh b/start.sh
index e9820e3..8ea7d30 100755
--- a/start.sh
+++ b/start.sh
@@ -1,2 +1,4 @@
 #! /usr/bin/env bash
-tcpserver -v 127.0.0.1 6001 ./server.sh
+
+PORT=6001
+tcpserver -v 127.0.0.1 $PORT ./server.sh