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-rw-r--r--tftpy/TftpStates.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/tftpy/TftpStates.py b/tftpy/TftpStates.py
index 3ae1ec3..a935fc1 100644
--- a/tftpy/TftpStates.py
+++ b/tftpy/TftpStates.py
@@ -130,7 +130,7 @@ class TftpState(object):
log.debug("In sendError, being asked to send error %d", errorcode)
errpkt = TftpPacketERR()
errpkt.errorcode = errorcode
- if self.context.tidport == None:
+ if self.context.tidport is None:
log.debug("Error packet received outside session. Discarding")
else:
self.context.sock.sendto(errpkt.encode().buffer,