diff --git a/include/chat/flags.h b/include/chat/flags.h
index c0a8d39..8ed3732 100644
--- a/include/chat/flags.h
+++ b/include/chat/flags.h
@@ -57,6 +57,7 @@ enum WHY2_CHAT_SERVER_TYPE //TYPE OF SERVER
 #define WHY2_CHAT_CODE_LIST "CS2" //TELL SERVER TO GIVE YOU ALL CONNECTED USERS
 #define WHY2_CHAT_CODE_DM "CS3" //TELL SERVER TO SEND MESSAGE ONLY TO SPECIFIC ID
 #define WHY2_CHAT_CODE_VERSION "CS4" //TELL SERVER TO GIVE YOU ITS VERSION
+#define WHY2_CHAT_CODE_USERNAME "CS5" //TELL SERVER YOU ARE GIVING IT YOUR USERNAME
 
 //(AUTHORITY -> CLIENT) CODES
 #define WHY2_CHAT_CODE_KEY_EXCHANGE "AC0" //TELL CLIENT YOU ARE SENDING YOUR PUBLIC KEY