diff --git a/client/builders.go b/client/builders.go
index 6531269a..9ffa5668 100644
--- a/client/builders.go
+++ b/client/builders.go
@@ -165,10 +165,8 @@ func (c *QQClient) buildConfPushRespPacket(t int32, pktSeq int64, jceBuf []byte)
 	req.WriteInt32(t, 1)
 	req.WriteInt64(pktSeq, 2)
 	req.WriteBytes(jceBuf, 3)
-	b := append([]byte{0x0A}, req.Bytes()...)
-	b = append(b, 0x0B)
 	buf := &jce.RequestDataVersion3{
-		Map: map[string][]byte{"PushResp": b},
+		Map: map[string][]byte{"PushResp": packRequestDataV3(req.Bytes())},
 	}
 	pkt := &jce.RequestPacket{
 		IVersion:     3,
@@ -223,10 +221,8 @@ func (c *QQClient) buildFriendGroupListRequestPacket(friendStartIndex, friendLis
 		D6B:             []byte{},
 		SnsTypeList:     []int64{13580, 13581, 13582},
 	}
-	b := append([]byte{0x0A}, req.ToBytes()...)
-	b = append(b, 0x0B)
 	buf := &jce.RequestDataVersion3{
-		Map: map[string][]byte{"FL": b},
+		Map: map[string][]byte{"FL": packRequestDataV3(req.ToBytes())},
 	}
 	pkt := &jce.RequestPacket{
 		IVersion:     3,
diff --git a/client/global.go b/client/global.go
index e284613c..2bbf42c2 100644
--- a/client/global.go
+++ b/client/global.go
@@ -245,3 +245,9 @@ func (b *groupMessageBuilder) build() *msg.Message {
 	}
 	return base
 }
+
+func packRequestDataV3(data []byte) (r []byte) {
+	r = append([]byte{0x0A}, data...)
+	r = append(r, 0x0B)
+	return
+}
diff --git a/client/pb/structmsg/msg.proto b/client/pb/structmsg/structmsg.proto
similarity index 99%
rename from client/pb/structmsg/msg.proto
rename to client/pb/structmsg/structmsg.proto
index 699c88fb..f7501cc8 100644
--- a/client/pb/structmsg/msg.proto
+++ b/client/pb/structmsg/structmsg.proto
@@ -32,7 +32,7 @@ message FriendInfo {
   string msgBlacklist = 2;
 }
 
-message GroupInfo {
+message SGroupInfo {
   int32 groupAuthType = 1;
   int32 displayAction = 2;
   string msgAlert = 3;
@@ -182,7 +182,7 @@ message SystemMsg {
   int32 groupMsgType = 12;
   int32 groupInviterRole = 13;
   FriendInfo friendInfo = 14;
-  GroupInfo groupInfo = 15;
+  SGroupInfo groupInfo = 15;
   int64 actorUin = 16;
   string msgActorDescribe = 17;
   string msgAdditionalList = 18;