diff --git a/json_rpc/client.nim b/json_rpc/client.nim
index ea3437b..d8b1b18 100644
--- a/json_rpc/client.nim
+++ b/json_rpc/client.nim
@@ -27,7 +27,8 @@ proc rpcCallNode*(path: string, params: JsonNode, id: ClientId): JsonNode =
   %{"jsonrpc": %"2.0", "method": %path, "params": params, "id": %id}
 
 method call*(client: RpcClient, name: string,
-           params: JsonNode): Future[Response] {.gcsafe, async, base.} = discard
+             params: JsonNode): Future[Response] {.gcsafe, async, base.} =
+  discard
 
 method close*(client: RpcClient) {.base, gcsafe, async.} = discard
 
diff --git a/json_rpc/clients/httpclient.nim b/json_rpc/clients/httpclient.nim
index 777d6a1..a6aaf37 100644
--- a/json_rpc/clients/httpclient.nim
+++ b/json_rpc/clients/httpclient.nim
@@ -172,13 +172,12 @@ proc httpMethod*(client: RpcHttpClient, m: HttpMethod) =
   client.options.httpMethod = m
 
 method call*(client: RpcHttpClient, name: string,
-           params: JsonNode): Future[Response] {.async, gcsafe.} =
+             params: JsonNode): Future[Response] {.async, gcsafe.} =
   ## Remotely calls the specified RPC method.
   let id = client.getNextId()
 
   let transp = await connect(client.addresses[0])
   var reqBody = $rpcCallNode(name, params, id)
-  echo "Sending (", client.httpMethod, "): ", reqBody
   let res = await transp.sendRequest(reqBody, client.httpMethod)
   if not res:
     debug "Failed to send message to RPC server",
diff --git a/json_rpc/clients/socketclient.nim b/json_rpc/clients/socketclient.nim
index 4357d9a..cfbd12c 100644
--- a/json_rpc/clients/socketclient.nim
+++ b/json_rpc/clients/socketclient.nim
@@ -14,7 +14,7 @@ proc newRpcSocketClient*: RpcSocketClient =
   result.initRpcClient()
 
 method call*(self: RpcSocketClient, name: string,
-          params: JsonNode): Future[Response] {.async.} =
+             params: JsonNode): Future[Response] {.async.} =
   ## Remotely calls the specified RPC method.
   let id = self.getNextId()
   var value = $rpcCallNode(name, params, id) & "\c\l"
@@ -29,7 +29,7 @@ method call*(self: RpcSocketClient, name: string,
 
   let res = await self.transport.write(value)
   # TODO: Add actions when not full packet was send, e.g. disconnect peer.
-  doAssert(res == len(value))    
+  doAssert(res == len(value))
 
   result = await newFut
 
diff --git a/json_rpc/clients/websocketclient.nim b/json_rpc/clients/websocketclient.nim
index 4924b54..000a767 100644
--- a/json_rpc/clients/websocketclient.nim
+++ b/json_rpc/clients/websocketclient.nim
@@ -15,7 +15,7 @@ proc newRpcWebSocketClient*: RpcWebSocketClient =
   result.initRpcClient()
 
 method call*(self: RpcWebSocketClient, name: string,
-          params: JsonNode): Future[Response] {.async.} =
+             params: JsonNode): Future[Response] {.async.} =
   ## Remotely calls the specified RPC method.
   let id = self.getNextId()
   var value = $rpcCallNode(name, params, id) & "\c\l"
diff --git a/json_rpc/router.nim b/json_rpc/router.nim
index b37c15f..fcb13b8 100644
--- a/json_rpc/router.nim
+++ b/json_rpc/router.nim
@@ -28,11 +28,6 @@ const
   paramsField = "params"
   jsonRpcField = "jsonrpc"
   idField = "id"
-  resultField = "result"
-  errorField = "error"
-  codeField = "code"
-  messageField = "message"
-  dataField = "data"
   messageTerminator = "\c\l"
 
   JSON_PARSE_ERROR* = -32700
@@ -103,7 +98,7 @@ proc checkJsonState*(line: string,
 
 proc wrapReply*(id: JsonNode, value, error: StringOfJson): StringOfJson =
   return StringOfJson(
-    """{"jsonRpcField":"2.0","idField":$1,"resultField":$2,"errorField":$3}""" % [
+    """{"jsonrpc":"2.0","id":$1,"result":$2,"error":$3}""" % [
       $id, string(value), string(error)
     ])
 
@@ -111,7 +106,7 @@ proc wrapError*(code: int, msg: string, id: JsonNode,
                 data: JsonNode = newJNull()): StringOfJson {.gcsafe.} =
   # Create standardised error json
   result = StringOfJson(
-    """{"codeField":$1,"idField":$2,"messageField":$3,"dataField":$4}""" % [
+    """{"code":$1,"id":$2,"message":$3,"data":$4}""" % [
       $code, $id, escapeJson(msg), $data
     ])
   debug "Error generated", error = result, id = id
@@ -224,34 +219,28 @@ macro rpc*(server: RpcRouter, path: string, body: untyped): untyped =
     setup = jsonToNim(parameters, paramsIdent)
     procBody = if body.kind == nnkStmtList: body else: body.body
 
-  if parameters.hasReturnType:
-    let ReturnType = parameters[0]
+  let ReturnType = if parameters.hasReturnType: parameters[0]
+                   else: ident "JsonNode"
 
-    # delegate async proc allows return and setting of result as native type
-    result.add quote do:
-      proc `doMain`(`paramsIdent`: JsonNode): Future[`ReturnType`] {.async.} =
-        `setup`
-        `procBody`
+  # delegate async proc allows return and setting of result as native type
+  result.add quote do:
+    proc `doMain`(`paramsIdent`: JsonNode): Future[`ReturnType`] {.async.} =
+      `setup`
+      `procBody`
 
-    if ReturnType == ident"JsonNode":
-      # `JsonNode` results don't need conversion
-      result.add quote do:
-        proc `procName`(`paramsIdent`: JsonNode): Future[StringOfJson] {.async, gcsafe.} =
-          return StringOfJson($(await `doMain`(`paramsIdent`)))
-    elif ReturnType == ident"StringOfJson":
-      result.add quote do:
-        proc `procName`(`paramsIdent`: JsonNode): Future[StringOfJson] {.async, gcsafe.} =
-          return await `doMain`(`paramsIdent`)
-    else:
-      result.add quote do:
-        proc `procName`(`paramsIdent`: JsonNode): Future[StringOfJson] {.async, gcsafe.} =
-          return StringOfJson($(%(await `doMain`(`paramsIdent`))))
-  else:
-    # no return types, inline contents
+  if ReturnType == ident"JsonNode":
+    # `JsonNode` results don't need conversion
     result.add quote do:
       proc `procName`(`paramsIdent`: JsonNode): Future[StringOfJson] {.async, gcsafe.} =
-        `setup`
-        `procBody`
+        return StringOfJson($(await `doMain`(`paramsIdent`)))
+  elif ReturnType == ident"StringOfJson":
+    result.add quote do:
+      proc `procName`(`paramsIdent`: JsonNode): Future[StringOfJson] {.async, gcsafe.} =
+        return await `doMain`(`paramsIdent`)
+  else:
+    result.add quote do:
+      proc `procName`(`paramsIdent`: JsonNode): Future[StringOfJson] {.async, gcsafe.} =
+        return StringOfJson($(%(await `doMain`(`paramsIdent`))))
 
   result.add quote do:
     `server`.register(`path`, `procName`)
diff --git a/tests/helpers.nim b/tests/helpers.nim
new file mode 100644
index 0000000..590fd33
--- /dev/null
+++ b/tests/helpers.nim
@@ -0,0 +1,12 @@
+import
+  json, ../json_rpc/router
+
+template `==`*(a, b: distinct (string|StringOfJson)): bool =
+  string(a) == string(b)
+
+template `==`*(a: StringOfJson, b: JsonNode): bool =
+  parseJson(string a) == b
+
+template `==`*(a: JsonNode, b: StringOfJson): bool =
+  a == parseJson(string b)
+
diff --git a/tests/testethcalls.nim b/tests/testethcalls.nim
index b21ea8b..6142b3c 100644
--- a/tests/testethcalls.nim
+++ b/tests/testethcalls.nim
@@ -1,6 +1,7 @@
-import unittest, json, tables
-import ../json_rpc/[rpcclient, rpcserver]
-import stint, ethtypes, ethprocs, stintjson, chronicles
+import
+  unittest, json, tables,
+  stint, ethtypes, ethprocs, stintjson, chronicles,
+  ../json_rpc/[rpcclient, rpcserver], ./helpers
 
 from os import getCurrentDir, DirSep
 from strutils import rsplit
@@ -26,7 +27,7 @@ server.rpc("rpc.testreturnuint256") do() -> UInt256:
   let r: UInt256 = "0x1234567890abcdef".parse(UInt256, 16)
   return r
 
-proc testLocalCalls: Future[seq[JsonNode]] =
+proc testLocalCalls: Future[seq[StringOfJson]] =
   ## Call RPCs created with `rpc` locally.
   ## This simply demonstrates async calls of the procs generated by the `rpc` macro.
   var
diff --git a/tests/testrpcmacro.nim b/tests/testrpcmacro.nim
index 03e680a..9d29489 100644
--- a/tests/testrpcmacro.nim
+++ b/tests/testrpcmacro.nim
@@ -1,5 +1,5 @@
 import unittest, json, chronicles, options
-import ../json_rpc/rpcserver
+import ../json_rpc/rpcserver, ./helpers
 
 type
   # some nested types to check object parsing
@@ -137,7 +137,7 @@ suite "Server types":
 
   test "Simple paths":
     let r = waitFor rpcSimplePath(%[])
-    check r == %1
+    check r == "1"
 
   test "Different param types":
     let
diff --git a/tests/testserverclient.nim b/tests/testserverclient.nim
index 381a71a..2347ded 100644
--- a/tests/testserverclient.nim
+++ b/tests/testserverclient.nim
@@ -1,5 +1,6 @@
-import unittest, json, chronicles
-import  ../json_rpc/[rpcclient, rpcserver]
+import
+  unittest, json, chronicles,
+  ../json_rpc/[rpcclient, rpcserver], ./helpers
 
 var srv = newRpcSocketServer(["localhost:8545"])
 var client = newRpcSocketClient()
@@ -19,3 +20,4 @@ suite "Server/Client RPC":
 
 srv.stop()
 waitFor srv.closeWait()
+