diff --git a/src/zmq/zmqrpc.cpp b/src/zmq/zmqrpc.cpp
index ea1954cc6..58691ff23 100644
--- a/src/zmq/zmqrpc.cpp
+++ b/src/zmq/zmqrpc.cpp
@@ -1,70 +1,66 @@
 // Copyright (c) 2018 The Bitcoin Core developers
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
 #include <zmq/zmqrpc.h>
 
 #include <rpc/server.h>
 #include <rpc/util.h>
 #include <zmq/zmqabstractnotifier.h>
 #include <zmq/zmqnotificationinterface.h>
 
 #include <univalue.h>
 
 namespace {
 
 UniValue getzmqnotifications(const Config &config,
                              const JSONRPCRequest &request) {
-    if (request.fHelp || request.params.size() != 0) {
-        throw std::runtime_error(RPCHelpMan{
-            "getzmqnotifications",
-            "\nReturns information about the active ZeroMQ "
-            "notifications.\n",
-            {},
-            RPCResult{
-                "[\n"
-                "  {                        (json object)\n"
-                "    \"type\": \"pubhashtx\",   (string) Type of notification\n"
-                "    \"address\": \"...\"       (string) Address of the "
-                "publisher\n"
-                "    \"hwm\": n               (numeric) Outbound message high "
-                "water mark\n"
-                "  },\n"
-                "  ...\n"
-                "]\n"},
-            RPCExamples{HelpExampleCli("getzmqnotifications", "") +
-                        HelpExampleRpc("getzmqnotifications", "")},
-        }
-                                     .ToString());
+    RPCHelpMan{
+        "getzmqnotifications",
+        "\nReturns information about the active ZeroMQ notifications.\n",
+        {},
+        RPCResult{
+            "[\n"
+            "  {                        (json object)\n"
+            "    \"type\": \"pubhashtx\",   (string) Type of notification\n"
+            "    \"address\": \"...\"       (string) Address of the publisher\n"
+            "    \"hwm\": n               (numeric) Outbound message high "
+            "water mark\n"
+            "  },\n"
+            "  ...\n"
+            "]\n"},
+        RPCExamples{HelpExampleCli("getzmqnotifications", "") +
+                    HelpExampleRpc("getzmqnotifications", "")},
     }
+        .Check(request);
 
     UniValue result(UniValue::VARR);
     if (g_zmq_notification_interface != nullptr) {
         for (const auto *n :
              g_zmq_notification_interface->GetActiveNotifiers()) {
             UniValue obj(UniValue::VOBJ);
             obj.pushKV("type", n->GetType());
             obj.pushKV("address", n->GetAddress());
             obj.pushKV("hwm", n->GetOutboundMessageHighWaterMark());
             result.push_back(obj);
         }
     }
 
     return result;
 }
 
 // clang-format off
 static const CRPCCommand commands[] = {
     //  category          name                     actor (function)        argNames
     //  ----------------- ------------------------ ----------------------- ----------
     { "zmq",            "getzmqnotifications",   getzmqnotifications,    {} },
 };
 // clang-format on
 
 } // anonymous namespace
 
 void RegisterZMQRPCCommands(CRPCTable &t) {
     for (const auto &c : commands) {
         t.appendCommand(c.name, &c);
     }
 }