diff --git a/src/proto/SysMessage.proto b/src/proto/SysMessage.proto
index 82c7e150..f092f3e6 100644
--- a/src/proto/SysMessage.proto
+++ b/src/proto/SysMessage.proto
@@ -5,9 +5,9 @@ message Data{
     repeated Body body = 2;
 }
 message Header {
-        uint32  GroupNumber = 1;
-        string GroupString = 2;
-        uint32   QQ = 5;
+        uint32  PeerNumber = 1;
+        string PeerString = 2;
+        uint32   Uin = 5;
         optional string Uid = 6;
  }  
 message Body {
@@ -18,4 +18,4 @@ message Body {
         uint32  Time = 6;
         uint64  MsgID = 12;
         uint32  Other = 13;
-}
\ No newline at end of file
+}