diff --git a/src/cpp/ripple/CallRPC.cpp b/src/cpp/ripple/CallRPC.cpp
index 9058cdb3ea..13c29361e6 100644
--- a/src/cpp/ripple/CallRPC.cpp
+++ b/src/cpp/ripple/CallRPC.cpp
@@ -558,13 +558,14 @@ Json::Value RPCParser::parseRipplePathFind(const Json::Value& jvParams)
 
 // sign/submit any transaction to the network
 //
-// sign private_key json
-// submit private_key json
-// submit tx_blob
+// sign <private_key> <json> offline
+// submit <private_key> <json>
+// submit <tx_blob>
 Json::Value RPCParser::parseSignSubmit(const Json::Value& jvParams)
 {
 	Json::Value		txJSON;
 	Json::Reader	reader;
+	bool			bOffline	= 3 == jvParams.size() && jvParams[2u].asString() == "offline";
 
 	if (1 == jvParams.size())
 	{
@@ -576,13 +577,16 @@ Json::Value RPCParser::parseSignSubmit(const Json::Value& jvParams)
 
 		return jvRequest;
 	}
-	// Submitting tx_json.
-	else if (reader.parse(jvParams[1u].asString(), txJSON))
+	else if ((2 == jvParams.size() || bOffline)
+		&& reader.parse(jvParams[1u].asString(), txJSON))
 	{
+		// Signing or submitting tx_json.
 		Json::Value	jvRequest;
 
 		jvRequest["secret"]		= jvParams[0u].asString();
 		jvRequest["tx_json"]	= txJSON;
+		if (bOffline)
+			jvRequest["offline"]	= true;
 
 		return jvRequest;
 	}
@@ -767,7 +771,7 @@ Json::Value RPCParser::parseCommand(std::string strMethod, Json::Value jvParams)
 		{	"proof_verify",			&RPCParser::parseProofVerify,			2,  4	},
 		{	"random",				&RPCParser::parseAsIs,					0,  0	},
 		{	"ripple_path_find",		&RPCParser::parseRipplePathFind,	    1,  2	},
-		{	"sign",					&RPCParser::parseSignSubmit,			2,  2	},
+		{	"sign",					&RPCParser::parseSignSubmit,			2,  3	},
 		{	"sms",					&RPCParser::parseSMS,					1,  1	},
 		{	"submit",				&RPCParser::parseSignSubmit,			1,  2	},
 		{	"server_info",			&RPCParser::parseAsIs,					0,  0	},
diff --git a/src/cpp/ripple/RPCHandler.cpp b/src/cpp/ripple/RPCHandler.cpp
index ea1931e2b7..39c27d5c18 100644
--- a/src/cpp/ripple/RPCHandler.cpp
+++ b/src/cpp/ripple/RPCHandler.cpp
@@ -78,7 +78,7 @@ Json::Value RPCHandler::transactionSign(Json::Value jvRequest, bool bSubmit, Sco
 	Json::Value		jvResult;
 	RippleAddress	naSeed;
 	RippleAddress	raSrcAddressID;
-	bool			bOffline			= jvRequest.isMember("offline");
+	bool			bOffline			= jvRequest.isMember("offline") && jvRequest["offline"].asBool();
 
 	WriteLog (lsDEBUG, RPCHandler) << boost::str(boost::format("transactionSign: %s") % jvRequest);
 
@@ -231,13 +231,16 @@ Json::Value RPCHandler::transactionSign(Json::Value jvRequest, bool bSubmit, Sco
 
 	if (!txJSON.isMember("Flags")) txJSON["Flags"] = 0;
 
-	Ledger::pointer	lpCurrent		= mNetOps->getCurrentSnapshot();
-	SLE::pointer	sleAccountRoot	= mNetOps->getSLEi(lpCurrent, Ledger::getAccountRootIndex(raSrcAddressID.getAccountID()));
-
-	if (!sleAccountRoot)
+	if (!bOffline)
 	{
-		// XXX Ignore transactions for accounts not created.
-		return rpcError(rpcSRC_ACT_NOT_FOUND);
+		Ledger::pointer	lpCurrent		= mNetOps->getCurrentSnapshot();
+		SLE::pointer	sleAccountRoot	= mNetOps->getSLEi(lpCurrent, Ledger::getAccountRootIndex(raSrcAddressID.getAccountID()));
+
+		if (!sleAccountRoot)
+		{
+			// XXX Ignore transactions for accounts not created.
+			return rpcError(rpcSRC_ACT_NOT_FOUND);
+		}
 	}
 
 	bool			bHaveAuthKey	= false;