diff --git a/rpc/args.go b/rpc/args.go
index 429b385d5..f730819fd 100644
--- a/rpc/args.go
+++ b/rpc/args.go
@@ -289,7 +289,7 @@ type WhisperMessageArgs struct {
 	Payload  string
 	To       string
 	From     string
-	Topics   []string
+	Topic    []string
 	Priority uint32
 	Ttl      uint32
 }
diff --git a/rpc/message.go b/rpc/message.go
index b5b852f54..d96c35d7e 100644
--- a/rpc/message.go
+++ b/rpc/message.go
@@ -231,21 +231,6 @@ func (req *RpcRequest) ToFilterStringArgs() (string, error) {
 	return args, nil
 }
 
-func (req *RpcRequest) ToFilterChangedArgs() (int, error) {
-	if len(req.Params) < 1 {
-		return 0, NewErrorResponse(ErrorArguments)
-	}
-
-	var id int
-	r := bytes.NewReader(req.Params[0])
-	err := json.NewDecoder(r).Decode(&id)
-	if err != nil {
-		return 0, NewErrorResponse(ErrorDecodeArgs)
-	}
-	rpclogger.DebugDetailf("%T %v", id, id)
-	return id, nil
-}
-
 func (req *RpcRequest) ToDbPutArgs() (*DbArgs, error) {
 	if len(req.Params) < 3 {
 		return nil, NewErrorResponse(ErrorArguments)
@@ -301,7 +286,7 @@ func (req *RpcRequest) ToWhisperFilterArgs() (*xeth.Options, error) {
 	return &args, nil
 }
 
-func (req *RpcRequest) ToWhisperIdArgs() (int, error) {
+func (req *RpcRequest) ToIdArgs() (int, error) {
 	if len(req.Params) < 1 {
 		return 0, NewErrorResponse(ErrorArguments)
 	}
diff --git a/rpc/packages.go b/rpc/packages.go
index 8aa604aa5..7044d9d12 100644
--- a/rpc/packages.go
+++ b/rpc/packages.go
@@ -349,7 +349,7 @@ func (self *EthereumApi) MessagesChanged(id int, reply *interface{}) error {
 }
 
 func (p *EthereumApi) WhisperPost(args *WhisperMessageArgs, reply *interface{}) error {
-	err := p.xeth.Whisper().Post(args.Payload, args.To, args.From, args.Topics, args.Priority, args.Ttl)
+	err := p.xeth.Whisper().Post(args.Payload, args.To, args.From, args.Topic, args.Priority, args.Ttl)
 	if err != nil {
 		return err
 	}
@@ -445,13 +445,13 @@ func (p *EthereumApi) GetRequestReply(req *RpcRequest, reply *interface{}) error
 		}
 		return p.NewFilterString(args, reply)
 	case "eth_changed":
-		args, err := req.ToFilterChangedArgs()
+		args, err := req.ToIdArgs()
 		if err != nil {
 			return err
 		}
 		return p.FilterChanged(args, reply)
 	case "eth_filterLogs":
-		args, err := req.ToFilterChangedArgs()
+		args, err := req.ToIdArgs()
 		if err != nil {
 			return err
 		}
@@ -504,7 +504,7 @@ func (p *EthereumApi) GetRequestReply(req *RpcRequest, reply *interface{}) error
 		}
 		return p.NewWhisperFilter(args, reply)
 	case "shh_changed":
-		args, err := req.ToWhisperIdArgs()
+		args, err := req.ToIdArgs()
 		if err != nil {
 			return err
 		}
@@ -522,7 +522,7 @@ func (p *EthereumApi) GetRequestReply(req *RpcRequest, reply *interface{}) error
 		}
 		return p.HasWhisperIdentity(args, reply)
 	case "shh_getMessages":
-		args, err := req.ToWhisperIdArgs()
+		args, err := req.ToIdArgs()
 		if err != nil {
 			return err
 		}