diff --git a/src/rpc/mining.cpp b/src/rpc/mining.cpp
--- a/src/rpc/mining.cpp
+++ b/src/rpc/mining.cpp
@@ -695,23 +695,19 @@
 
 static UniValue submitblock(const Config &config,
                             const JSONRPCRequest &request) {
+    // We allow 2 arguments for compliance with BIP22. Argument 2 is ignored.
     if (request.fHelp || request.params.size() < 1 ||
         request.params.size() > 2) {
         throw std::runtime_error(
-            "submitblock \"hexdata\" ( \"jsonparametersobject\" )\n"
+            "submitblock \"hexdata\"  ( \"dummy\" )\n"
             "\nAttempts to submit new block to network.\n"
-            "The 'jsonparametersobject' parameter is currently ignored.\n"
             "See https://en.bitcoin.it/wiki/BIP_0022 for full specification.\n"
 
             "\nArguments\n"
             "1. \"hexdata\"        (string, required) the hex-encoded block "
             "data to submit\n"
-            "2. \"parameters\"     (string, optional) object of optional "
-            "parameters\n"
-            "    {\n"
-            "      \"workid\" : \"id\"    (string, optional) if the server "
-            "provided a workid, it MUST be included with submissions\n"
-            "    }\n"
+            "2. \"dummy\"          (optional) dummy value, for compatibility "
+            "with BIP22. This value is ignored.\n"
             "\nResult:\n"
             "\nExamples:\n" +
             HelpExampleCli("submitblock", "\"mydata\"") +
@@ -800,7 +796,7 @@
     {"mining",     "getmininginfo",         getmininginfo,         {}},
     {"mining",     "prioritisetransaction", prioritisetransaction, {"txid", "priority_delta", "fee_delta"}},
     {"mining",     "getblocktemplate",      getblocktemplate,      {"template_request"}},
-    {"mining",     "submitblock",           submitblock,           {"hexdata", "parameters"}},
+    {"mining",     "submitblock",           submitblock,           {"hexdata", "dummy"}},
 
     {"generating", "generatetoaddress",     generatetoaddress,     {"nblocks", "address", "maxtries"}},