diff --git a/UDP-reflector.py b/UDP-reflector.py
index fec8debb3e4835fb2770e5f7f915f136d5384cb0..a56666f41322e4b8031f78a63d549f814d9d0288 100644
--- a/UDP-reflector.py
+++ b/UDP-reflector.py
@@ -46,4 +46,5 @@ while True:
     print (time.ctime() + ',' + 'received , ' +
            packet_number + ' , ' + str(one_way_delay))
 
+outfile.close()
 EchoServer.close()