diff --git a/contrib/zmq/zmq_sub.py b/contrib/zmq/zmq_sub.py
index 5bae7360d..62c3d34fb 100755
--- a/contrib/zmq/zmq_sub.py
+++ b/contrib/zmq/zmq_sub.py
@@ -5,7 +5,7 @@ import binascii
 import zmq
 import struct
 
-port = 21427
+port = 28332
 
 zmqContext = zmq.Context()
 zmqSubSocket = zmqContext.socket(zmq.SUB)
diff --git a/doc/release-notes/release-notes-0.12.0.md b/doc/release-notes/release-notes-0.12.0.md
index 160354269..bc96504c0 100644
--- a/doc/release-notes/release-notes-0.12.0.md
+++ b/doc/release-notes/release-notes-0.12.0.md
@@ -405,9 +405,9 @@ arbitrary TCP connections inside SSL. On e.g. Ubuntu it can be installed with:
 
     sudo apt-get install stunnel4
 
-Then, to tunnel a SSL connection on 21427 to a RPC server bound on localhost on port 11427 do:
+Then, to tunnel a SSL connection on 28332 to a RPC server bound on localhost on port 11427 do:
 
-    stunnel -d 21427 -r 127.0.0.1:11427 -p stunnel.pem -P ''
+    stunnel -d 28332 -r 127.0.0.1:11427 -p stunnel.pem -P ''
 
 It can also be set up system-wide in inetd style.
 
diff --git a/doc/zmq.md b/doc/zmq.md
index d6cb5b0e8..0fb8c2b08 100644
--- a/doc/zmq.md
+++ b/doc/zmq.md
@@ -68,7 +68,7 @@ address. The same address can be used in more than one notification.
 
 For instance:
 
-    $ neobytesd -zmqpubhashtx=tcp://127.0.0.1:21427 \
+    $ neobytesd -zmqpubhashtx=tcp://127.0.0.1:28332 \
                -zmqpubrawtx=ipc:///tmp/neobytesd.tx.raw
 
 Each PUB notification has a topic and body, where the header
diff --git a/qa/rpc-tests/zmq_test.py b/qa/rpc-tests/zmq_test.py
index c0076da95..3a8d62ef2 100755
--- a/qa/rpc-tests/zmq_test.py
+++ b/qa/rpc-tests/zmq_test.py
@@ -23,7 +23,7 @@ except ImportError:
 
 class ZMQTest (BitcoinTestFramework):
 
-    port = 21427
+    port = 28332
 
     def setup_nodes(self):
         self.zmqContext = zmq.Context()