diff --git a/protocol/json/server.go b/protocol/json/server.go
index dde8981..32c8546 100644
--- a/protocol/json/server.go
+++ b/protocol/json/server.go
@@ -85,7 +85,9 @@ func newCodecRequest(r io.Reader, encoder encode.Encoder) protocol.CodecRequest
 	// Decode the request body and check if RPC method is valid.
 	req := new(serverRequest)
 	err := json.NewDecoder(r).Decode(req)
-	log.Printf("NewRequest err: %v", err)
+	if err == io.ErrUnexpectedEOF || err == io.EOF {
+		log.Printf("NewRequest err: %v", err)
+	}
 	if err != nil {
 		err = &Error{
 			Code:    E_PARSE,