diff --git a/common/serial/numbers.go b/common/serial/numbers.go
index a81765e7b..556fcb345 100644
--- a/common/serial/numbers.go
+++ b/common/serial/numbers.go
@@ -22,7 +22,7 @@ func ReadUint16(reader io.Reader) (uint16, error) {
 
 func WriteUint16(value uint16) func([]byte) (int, error) {
 	return func(b []byte) (int, error) {
-		b = Uint16ToBytes(value, b[:0])
+		Uint16ToBytes(value, b[:0])
 		return 2, nil
 	}
 }
@@ -37,7 +37,7 @@ func Uint32ToString(value uint32) string {
 
 func WriteUint32(value uint32) func([]byte) (int, error) {
 	return func(b []byte) (int, error) {
-		b = Uint32ToBytes(value, b[:0])
+		Uint32ToBytes(value, b[:0])
 		return 4, nil
 	}
 }
diff --git a/common/serial/typed_message.proto b/common/serial/typed_message.proto
index d8b8f3080..41ee5a3df 100644
--- a/common/serial/typed_message.proto
+++ b/common/serial/typed_message.proto
@@ -6,7 +6,7 @@ option go_package = "serial";
 option java_package = "com.v2ray.core.common.serial";
 option java_multiple_files = true;
 
-// Serialized proto message along with its type name.
+// TypedMessage is a serialized proto message along with its type name.
 message TypedMessage {
   // The name of the message type, retrieved from protobuf API.
   string type = 1;