diff --git a/Lib/ftplib.py b/Lib/ftplib.py
index 7e678b4..bcfa652 100644
--- a/Lib/ftplib.py
+++ b/Lib/ftplib.py
@@ -236,7 +236,7 @@
         if self.debugging > 1: print('*put urgent*', self.sanitize(line))
         self.sock.sendall(line, MSG_OOB)
         resp = self.getmultiline()
-        if resp[:3] not in ('426', '226'):
+        if resp[:3] not in ('426', '225', '226'):
             raise error_proto(resp)
 
     def sendcmd(self, cmd):