diff --git a/test/functional/interface_zmq.py b/test/functional/interface_zmq.py
index ee0ec7c979..7c03e58f6d 100755
--- a/test/functional/interface_zmq.py
+++ b/test/functional/interface_zmq.py
@@ -1,125 +1,130 @@
 #!/usr/bin/env python3
 # Copyright (c) 2015-2016 The Bitcoin Core developers
 # Distributed under the MIT software license, see the accompanying
 # file COPYING or http://www.opensource.org/licenses/mit-license.php.
 """Test the ZMQ notification interface."""
 import configparser
 import struct
+from io import BytesIO
 
 from test_framework.test_framework import BitcoinTestFramework, SkipTest
+from test_framework.messages import CTransaction
 from test_framework.util import (
     assert_equal,
     bytes_to_hex_str,
     hash256,
 )
 
 
 class ZMQSubscriber:
     def __init__(self, socket, topic):
         self.sequence = 0
         self.socket = socket
         self.topic = topic
 
         import zmq
         self.socket.setsockopt(zmq.SUBSCRIBE, self.topic)
 
     def receive(self):
         topic, body, seq = self.socket.recv_multipart()
         # Topic should match the subscriber topic.
         assert_equal(topic, self.topic)
         # Sequence should be incremental.
         assert_equal(struct.unpack('<I', seq)[-1], self.sequence)
         self.sequence += 1
         return body
 
 
 class ZMQTest (BitcoinTestFramework):
     def set_test_params(self):
         self.num_nodes = 2
 
     def setup_nodes(self):
         # Try to import python3-zmq. Skip this test if the import fails.
         try:
             import zmq
         except ImportError:
             raise SkipTest("python3-zmq module not available.")
 
         # Check that bitcoin has been built with ZMQ enabled.
         config = configparser.ConfigParser()
         config.read_file(open(self.options.configfile))
 
         if not config["components"].getboolean("ENABLE_ZMQ"):
             raise SkipTest("bitcoind has not been built with zmq enabled.")
 
         # Initialize ZMQ context and socket.
         # All messages are received in the same socket which means that this
         # test fails if the publishing order changes.
         # Note that the publishing order is not defined in the documentation and
         # is subject to change.
         address = "tcp://127.0.0.1:28332"
         self.zmq_context = zmq.Context()
         socket = self.zmq_context.socket(zmq.SUB)
         socket.set(zmq.RCVTIMEO, 60000)
         socket.connect(address)
 
         # Subscribe to all available topics.
         self.hashblock = ZMQSubscriber(socket, b"hashblock")
         self.hashtx = ZMQSubscriber(socket, b"hashtx")
         self.rawblock = ZMQSubscriber(socket, b"rawblock")
         self.rawtx = ZMQSubscriber(socket, b"rawtx")
 
         self.extra_args = [["-zmqpub{}={}".format(sub.topic.decode(), address) for sub in [
             self.hashblock, self.hashtx, self.rawblock, self.rawtx]], []]
         self.add_nodes(self.num_nodes, self.extra_args)
         self.start_nodes()
 
     def run_test(self):
         try:
             self._zmq_test()
         finally:
             # Destroy the ZMQ context.
             self.log.debug("Destroying ZMQ context")
             self.zmq_context.destroy(linger=None)
 
     def _zmq_test(self):
         num_blocks = 5
         self.log.info(
             "Generate {0} blocks (and {0} coinbase txes)".format(num_blocks))
         genhashes = self.nodes[0].generate(num_blocks)
         self.sync_all()
 
         for x in range(num_blocks):
             # Should receive the coinbase txid.
             txid = self.hashtx.receive()
 
             # Should receive the coinbase raw transaction.
             hex = self.rawtx.receive()
-            assert_equal(hash256(hex), txid)
+            tx = CTransaction()
+            tx.deserialize(BytesIO(hex))
+            tx.calc_sha256()
+            assert_equal(tx.hash, bytes_to_hex_str(txid))
 
             # Should receive the generated block hash.
             hash = bytes_to_hex_str(self.hashblock.receive())
             assert_equal(genhashes[x], hash)
             # The block should only have the coinbase txid.
             assert_equal([bytes_to_hex_str(txid)],
                          self.nodes[1].getblock(hash)["tx"])
 
             # Should receive the generated raw block.
             block = self.rawblock.receive()
             assert_equal(genhashes[x], bytes_to_hex_str(hash256(block[:80])))
 
         self.log.info("Wait for tx from second node")
         payment_txid = self.nodes[1].sendtoaddress(
             self.nodes[0].getnewaddress(), 1.0)
         self.sync_all()
 
         # Should receive the broadcasted txid.
         txid = self.hashtx.receive()
         assert_equal(payment_txid, bytes_to_hex_str(txid))
 
         # Should receive the broadcasted raw transaction.
         hex = self.rawtx.receive()
         assert_equal(payment_txid, bytes_to_hex_str(hash256(hex)))
 
 
 if __name__ == '__main__':
     ZMQTest().main()