1 files changed, 2 insertions, 0 deletions
diff --git a/lib/net/ftp.rb b/lib/net/ftp.rb
index 436ccd937f..e0aa6f6adb 100644
--- a/lib/net/ftp.rb
+++ b/lib/net/ftp.rb
@@ -396,9 +396,11 @@ module Net
       synchronize do
 	resp = sendcmd('USER ' + user)
 	if resp[0] == ?3
+          raise FTPReplyError, resp if passwd.nil?
 	  resp = sendcmd('PASS ' + passwd)
 	end
 	if resp[0] == ?3
+          raise FTPReplyError, resp if acct.nil?
 	  resp = sendcmd('ACCT ' + acct)
 	end
       end