diff --git a/src/bitcoin-tx.cpp b/src/bitcoin-tx.cpp
index 6093f78fb..c6d5db786 100644
--- a/src/bitcoin-tx.cpp
+++ b/src/bitcoin-tx.cpp
@@ -77,7 +77,7 @@ static int AppInitRawTx(int argc, char* argv[])
         strUsage += HelpMessageOpt("in=TXID:VOUT(:SEQUENCE_NUMBER)", _("Add input to TX"));
         strUsage += HelpMessageOpt("locktime=N", _("Set TX lock time to N"));
         strUsage += HelpMessageOpt("nversion=N", _("Set TX version to N"));
-        strUsage += HelpMessageOpt("rbfoptin(=N)", _("Set RBF opt-in sequence number for input N (if not provided, opt-in all available inputs)"));
+        strUsage += HelpMessageOpt("replaceable(=N)", _("Set RBF opt-in sequence number for input N (if not provided, opt-in all available inputs)"));
         strUsage += HelpMessageOpt("outaddr=VALUE:ADDRESS", _("Add address-based output to TX"));
         strUsage += HelpMessageOpt("outpubkey=VALUE:PUBKEY[:FLAGS]", _("Add pay-to-pubkey output to TX") + ". " +
             _("Optionally add the \"W\" flag to produce a pay-to-witness-pubkey-hash output") + ". " +
@@ -673,7 +673,7 @@ static void MutateTx(CMutableTransaction& tx, const std::string& command,
         MutateTxVersion(tx, commandVal);
     else if (command == "locktime")
         MutateTxLocktime(tx, commandVal);
-    else if (command == "rbfoptin") {
+    else if (command == "replaceable") {
         MutateTxRBFOptIn(tx, commandVal);
     }
 
diff --git a/src/rpc/client.cpp b/src/rpc/client.cpp
index cb1539dce..a3ea5390e 100644
--- a/src/rpc/client.cpp
+++ b/src/rpc/client.cpp
@@ -86,7 +86,7 @@ static const CRPCConvertParam vRPCConvertParams[] =
     { "createrawtransaction", 0, "inputs" },
     { "createrawtransaction", 1, "outputs" },
     { "createrawtransaction", 2, "locktime" },
-    { "createrawtransaction", 3, "optintorbf" },
+    { "createrawtransaction", 3, "replaceable" },
     { "signrawtransaction", 1, "prevtxs" },
     { "signrawtransaction", 2, "privkeys" },
     { "sendrawtransaction", 1, "allowhighfees" },
diff --git a/src/rpc/rawtransaction.cpp b/src/rpc/rawtransaction.cpp
index 527a4d697..b878624df 100644
--- a/src/rpc/rawtransaction.cpp
+++ b/src/rpc/rawtransaction.cpp
@@ -294,7 +294,7 @@ UniValue createrawtransaction(const JSONRPCRequest& request)
 {
     if (request.fHelp || request.params.size() < 2 || request.params.size() > 4)
         throw std::runtime_error(
-            "createrawtransaction [{\"txid\":\"id\",\"vout\":n},...] {\"address\":amount,\"data\":\"hex\",...} ( locktime ) ( optintorbf )\n"
+            "createrawtransaction [{\"txid\":\"id\",\"vout\":n},...] {\"address\":amount,\"data\":\"hex\",...} ( locktime ) ( replaceable )\n"
             "\nCreate a transaction spending the given inputs and creating new outputs.\n"
             "Outputs can be addresses or data.\n"
             "Returns hex-encoded raw transaction.\n"
@@ -318,7 +318,8 @@ UniValue createrawtransaction(const JSONRPCRequest& request)
             "      ,...\n"
             "    }\n"
             "3. locktime                  (numeric, optional, default=0) Raw locktime. Non-0 value also locktime-activates inputs\n"
-            "4. optintorbf                (boolean, optional, default=false) Allow this transaction to be replaced by a transaction with higher fees. If provided, it is an error if explicit sequence numbers are incompatible.\n"
+            "4. replaceable               (boolean, optional, default=false) Marks this transaction as BIP125 replaceable.\n"
+            "                             Allows this transaction to be replaced by a transaction with higher fees. If provided, it is an error if explicit sequence numbers are incompatible.\n"
             "\nResult:\n"
             "\"transaction\"              (string) hex string of the transaction\n"
 
@@ -412,7 +413,7 @@ UniValue createrawtransaction(const JSONRPCRequest& request)
     }
 
     if (request.params.size() > 3 && rbfOptIn != SignalsOptInRBF(rawTx)) {
-        throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid parameter combination: Sequence number(s) contradict optintorbf option");
+        throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid parameter combination: Sequence number(s) contradict replaceable option");
     }
 
     return EncodeHexTx(rawTx);
@@ -900,7 +901,7 @@ static const CRPCCommand commands[] =
 { //  category              name                      actor (function)         okSafeMode
   //  --------------------- ------------------------  -----------------------  ----------
     { "rawtransactions",    "getrawtransaction",      &getrawtransaction,      true,  {"txid","verbose"} },
-    { "rawtransactions",    "createrawtransaction",   &createrawtransaction,   true,  {"inputs","outputs","locktime"} },
+    { "rawtransactions",    "createrawtransaction",   &createrawtransaction,   true,  {"inputs","outputs","locktime","replaceable"} },
     { "rawtransactions",    "decoderawtransaction",   &decoderawtransaction,   true,  {"hexstring"} },
     { "rawtransactions",    "decodescript",           &decodescript,           true,  {"hexstring"} },
     { "rawtransactions",    "sendrawtransaction",     &sendrawtransaction,     false, {"hexstring","allowhighfees"} },
diff --git a/src/wallet/rpcwallet.cpp b/src/wallet/rpcwallet.cpp
index e0c7ab9f0..867ccd424 100644
--- a/src/wallet/rpcwallet.cpp
+++ b/src/wallet/rpcwallet.cpp
@@ -2656,7 +2656,8 @@ UniValue fundrawtransaction(const JSONRPCRequest& request)
                             "                              Those recipients will receive less bitcoins than you enter in their corresponding amount field.\n"
                             "                              If no outputs are specified here, the sender pays the fee.\n"
                             "                                  [vout_index,...]\n"
-                            "     \"optIntoRbf\"             (boolean, optional) Allow this transaction to be replaced by a transaction with higher fees\n"
+                            "     \"replaceable\"            (boolean, optional) Marks this transaction as BIP125 replaceable.\n"
+                            "                              Allows this transaction to be replaced by a transaction with higher fees\n"
                             "   }\n"
                             "                         for backward compatibility: passing in a true instead of an object will result in {\"includeWatching\":true}\n"
                             "\nResult:\n"
@@ -2708,7 +2709,7 @@ UniValue fundrawtransaction(const JSONRPCRequest& request)
                 {"reserveChangeKey", UniValueType(UniValue::VBOOL)},
                 {"feeRate", UniValueType()}, // will be checked below
                 {"subtractFeeFromOutputs", UniValueType(UniValue::VARR)},
-                {"optIntoRbf", UniValueType(UniValue::VBOOL)},
+                {"replaceable", UniValueType(UniValue::VBOOL)},
             },
             true, true);
 
@@ -2742,8 +2743,8 @@ UniValue fundrawtransaction(const JSONRPCRequest& request)
         if (options.exists("subtractFeeFromOutputs"))
             subtractFeeFromOutputs = options["subtractFeeFromOutputs"].get_array();
 
-        if (options.exists("optIntoRbf")) {
-            coinControl.signalRbf = options["optIntoRbf"].get_bool();
+        if (options.exists("replaceable")) {
+            coinControl.signalRbf = options["replaceable"].get_bool();
         }
       }
     }