diff --git a/src/wallet/rpcwallet.cpp b/src/wallet/rpcwallet.cpp
--- a/src/wallet/rpcwallet.cpp
+++ b/src/wallet/rpcwallet.cpp
@@ -2892,58 +2892,57 @@
         return NullUniValue;
     }
 
-    if (request.fHelp || request.params.size() != 0) {
-        throw std::runtime_error(RPCHelpMan{
-            "getwalletinfo",
-            "Returns an object containing various wallet state info.\n",
-            {},
-            RPCResult{
-                "{\n"
-                "  \"walletname\": xxxxx,             (string) the wallet "
-                "name\n"
-                "  \"walletversion\": xxxxx,          (numeric) the wallet "
-                "version\n"
-                "  \"balance\": xxxxxxx,              (numeric) the total "
-                "confirmed balance of the wallet in " +
-                CURRENCY_UNIT +
-                "\n"
-                "  \"unconfirmed_balance\": xxx,      (numeric) the total "
-                "unconfirmed balance of the wallet in " +
-                CURRENCY_UNIT +
-                "\n"
-                "  \"immature_balance\": xxxxxx,      (numeric) the total "
-                "immature balance of the wallet in " +
-                CURRENCY_UNIT +
-                "\n"
-                "  \"txcount\": xxxxxxx,              (numeric) the total "
-                "number of transactions in the wallet\n"
-                "  \"keypoololdest\": xxxxxx,         (numeric) the timestamp "
-                "(seconds since Unix epoch) of the oldest pre-generated key in "
-                "the key pool\n"
-                "  \"keypoolsize\": xxxx,             (numeric) how many new "
-                "keys are pre-generated (only counts external keys)\n"
-                "  \"keypoolsize_hd_internal\": xxxx, (numeric) how many new "
-                "keys are pre-generated for internal use (used for change "
-                "outputs, only appears if the wallet is using this feature, "
-                "otherwise external keys are used)\n"
-                "  \"unlocked_until\": ttt,           (numeric) the timestamp "
-                "in seconds since epoch (midnight Jan 1 1970 GMT) that the "
-                "wallet is unlocked for transfers, or 0 if the wallet is "
-                "locked\n"
-                "  \"paytxfee\": x.xxxx,              (numeric) the "
-                "transaction fee configuration, set in " +
-                CURRENCY_UNIT +
-                "/kB\n"
-                "  \"hdseedid\": \"<hash160>\"          (string, optional) the "
-                "Hash160 of the HD seed (only present when HD is enabled)\n"
-                "  \"private_keys_enabled\": true|false (boolean) false if "
-                "privatekeys are disabled for this wallet (enforced watch-only "
-                "wallet)\n"
-                "}\n"},
-            RPCExamples{HelpExampleCli("getwalletinfo", "") +
-                        HelpExampleRpc("getwalletinfo", "")},
-        }
-                                     .ToString());
+    const RPCHelpMan help{
+        "getwalletinfo",
+        "Returns an object containing various wallet state info.\n",
+        {},
+        RPCResult{
+            "{\n"
+            "  \"walletname\": xxxxx,             (string) the wallet name\n"
+            "  \"walletversion\": xxxxx,          (numeric) the wallet "
+            "version\n"
+            "  \"balance\": xxxxxxx,              (numeric) the total "
+            "confirmed balance of the wallet in " +
+            CURRENCY_UNIT +
+            "\n"
+            "  \"unconfirmed_balance\": xxx,      (numeric) the total "
+            "unconfirmed balance of the wallet in " +
+            CURRENCY_UNIT +
+            "\n"
+            "  \"immature_balance\": xxxxxx,      (numeric) the total immature "
+            "balance of the wallet in " +
+            CURRENCY_UNIT +
+            "\n"
+            "  \"txcount\": xxxxxxx,              (numeric) the total number "
+            "of transactions in the wallet\n"
+            "  \"keypoololdest\": xxxxxx,         (numeric) the timestamp "
+            "(seconds since Unix epoch) of the oldest pre-generated key in the "
+            "key pool\n"
+            "  \"keypoolsize\": xxxx,             (numeric) how many new keys "
+            "are pre-generated (only counts external keys)\n"
+            "  \"keypoolsize_hd_internal\": xxxx, (numeric) how many new keys "
+            "are pre-generated for internal use (used for change outputs, only "
+            "appears if the wallet is using this feature, otherwise external "
+            "keys are used)\n"
+            "  \"unlocked_until\": ttt,           (numeric) the timestamp in "
+            "seconds since epoch (midnight Jan 1 1970 GMT) that the wallet is "
+            "unlocked for transfers, or 0 if the wallet is locked\n"
+            "  \"paytxfee\": x.xxxx,              (numeric) the transaction "
+            "fee configuration, set in " +
+            CURRENCY_UNIT +
+            "/kB\n"
+            "  \"hdseedid\": \"<hash160>\"          (string, optional) the "
+            "Hash160 of the HD seed (only present when HD is enabled)\n"
+            "  \"private_keys_enabled\": true|false (boolean) false if "
+            "privatekeys are disabled for this wallet (enforced watch-only "
+            "wallet)\n"
+            "}\n"},
+        RPCExamples{HelpExampleCli("getwalletinfo", "") +
+                    HelpExampleRpc("getwalletinfo", "")},
+    };
+
+    if (request.fHelp || !help.IsValidNumArgs(request.params.size())) {
+        throw std::runtime_error(help.ToString());
     }
 
     // Make sure the results are valid at least up to the most recent block