diff --git a/test/client/03-publish-qos1-ws-large.py b/test/client/03-publish-qos1-ws-large.py
new file mode 100755
index 00000000..1921142d
--- /dev/null
+++ b/test/client/03-publish-qos1-ws-large.py
@@ -0,0 +1,85 @@
+#!/usr/bin/env python3
+
+#
+
+from mosq_test_helper import *
+
+def write_config(filename, port1, port2):
+    with open(filename, 'w') as f:
+        f.write("allow_anonymous true\n")
+        f.write(f"listener {port1}\n")
+        f.write("protocol websockets\n")
+        f.write(f"listener {port2}\n")
+
+def do_test(proto_ver):
+    rc = 1
+
+    ports = mosq_test.get_port(2)
+    conf_file = os.path.basename(__file__).replace('.py', '.conf')
+
+    if proto_ver == 5:
+        V = 'mqttv5'
+    elif proto_ver == 4:
+        V = 'mqttv311'
+    else:
+        V = 'mqttv31'
+
+    env = {
+            'LD_LIBRARY_PATH': mosq_test.get_build_root() + '/lib:'+ os.getenv("LD_LIBRARY_PATH", ""),
+            'XDG_CONFIG_HOME':'/tmp/missing'
+            }
+
+    payload = "abcdefghijklmnopqrstuvwxyz0123456789"*1821
+
+    cmd = ['../../client/mosquitto_pub',
+            '-p', str(ports[0]),
+            '-q', '1',
+            '-t', '03/pub/qos1/test',
+            '-m', payload,
+            '-V', V,
+            '--ws'
+            ]
+
+    mid = 1
+    publish_packet = mosq_test.gen_publish("03/pub/qos1/test", qos=1, mid=mid, payload=payload, proto_ver=proto_ver)
+    if proto_ver == 5:
+        puback_packet = mosq_test.gen_puback(mid, proto_ver=proto_ver, reason_code=mqtt5_rc.MQTT_RC_NO_MATCHING_SUBSCRIBERS)
+    else:
+        puback_packet = mosq_test.gen_puback(mid, proto_ver=proto_ver)
+
+    write_config(conf_file, ports[0], ports[1])
+
+    try:
+        broker = mosq_test.start_broker(filename=os.path.basename(__file__), port=ports[1], use_conf=True)
+        sock = mosq_test.sub_helper(port=ports[1], topic="#", qos=1, proto_ver=proto_ver)
+
+        pub = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE, env=env)
+        pub_terminate_rc = 0
+        if mosq_test.wait_for_subprocess(pub):
+            print("pub not terminated")
+            pub_terminate_rc = 1
+        (stdo, stde) = pub.communicate()
+
+        mosq_test.expect_packet(sock, "publish", publish_packet)
+        rc = pub_terminate_rc
+        sock.close()
+    except mosq_test.TestError:
+        pass
+    except Exception as e:
+        print(e)
+    finally:
+        broker.terminate()
+        os.remove(conf_file)
+        if mosq_test.wait_for_subprocess(broker):
+            print("broker not terminated")
+            if rc == 0: rc=1
+        (stdo, stde) = broker.communicate()
+        if rc:
+            print(stde.decode('utf-8'))
+            print("proto_ver=%d" % (proto_ver))
+            exit(rc)
+
+
+do_test(proto_ver=3)
+do_test(proto_ver=4)
+do_test(proto_ver=5)
diff --git a/test/client/Makefile b/test/client/Makefile
index b60274a6..23f9cae2 100644
--- a/test/client/Makefile
+++ b/test/client/Makefile
@@ -53,6 +53,7 @@ endif
 	./03-publish-qos1.py
 ifeq ($(WITH_WEBSOCKETS),yes)
 	./03-publish-qos1-ws.py
+	./03-publish-qos1-ws-large.py
 endif
 	./03-publish-repeat.py
 	./03-publish-socks.py
diff --git a/test/client/test.py b/test/client/test.py
index 038c33bf..1738bb4e 100755
--- a/test/client/test.py
+++ b/test/client/test.py
@@ -31,6 +31,7 @@ tests = [
     (1, './03-publish-qos1-properties.py'),
     (1, './03-publish-qos1.py'),
     (2, './03-publish-qos1-ws.py'),
+    (2, './03-publish-qos1-ws-large.py'),
     (1, './03-publish-repeat.py'),
     (1, './03-publish-url.py'),