diff --git a/src/game/Server/Opcodes.cpp b/src/game/Server/Opcodes.cpp
index da9e5de03..f5eeca7e0 100644
--- a/src/game/Server/Opcodes.cpp
+++ b/src/game/Server/Opcodes.cpp
@@ -869,7 +869,8 @@ void InitializeOpcodes()
     //OPCODE(MSG_GM_DESTROY_CORPSE,                        STATUS_NEVER,    PROCESS_INPLACE,      &WorldSession::Handle_NULL                     );
     //OPCODE(CMSG_GM_DESTROY_ONLINE_CORPSE,                STATUS_NEVER,    PROCESS_INPLACE,      &WorldSession::Handle_NULL                     );
     OPCODE(CMSG_ACTIVATETAXIEXPRESS,                     STATUS_LOGGEDIN, PROCESS_THREADSAFE,   &WorldSession::HandleActivateTaxiExpressOpcode );
-    //OPCODE(SMSG_SET_FACTION_ATWAR,                       STATUS_NEVER,    PROCESS_INPLACE,      &WorldSession::Handle_ServerSide               );
+    OPCODE(SMSG_SET_FACTION_ATWAR,                       STATUS_NEVER,    PROCESS_INPLACE,      &WorldSession::Handle_ServerSide               );
+    OPCODE(SMSG_SET_FACTION_NOT_VISIBLE,                 STATUS_NEVER, PROCESS_INPLACE, &WorldSession::Handle_ServerSide);
     //OPCODE(SMSG_GAMETIMEBIAS_SET,                        STATUS_NEVER,    PROCESS_INPLACE,      &WorldSession::Handle_ServerSide               );
     //OPCODE(CMSG_DEBUG_ACTIONS_START,                     STATUS_NEVER,    PROCESS_INPLACE,      &WorldSession::Handle_NULL                     );
     //OPCODE(CMSG_DEBUG_ACTIONS_STOP,                      STATUS_NEVER,    PROCESS_INPLACE,      &WorldSession::Handle_NULL                     );
diff --git a/src/game/Server/Opcodes.h b/src/game/Server/Opcodes.h
index bf34a738c..0569ab46a 100644
--- a/src/game/Server/Opcodes.h
+++ b/src/game/Server/Opcodes.h
@@ -853,7 +853,8 @@ enum Opcodes
     MSG_GM_DESTROY_CORPSE                                 = 0x0000,
     CMSG_GM_DESTROY_ONLINE_CORPSE                         = 0x0000,
     CMSG_ACTIVATETAXIEXPRESS                              = 0x0515, // 4.3.4 15595
-    SMSG_SET_FACTION_ATWAR                                = 0x0000,
+    SMSG_SET_FACTION_ATWAR                                = 0x4216, // 4.3.4 15595
+    SMSG_SET_FACTION_NOT_VISIBLE                          = 0x6737, // 4.3.4 15595
     SMSG_GAMETIMEBIAS_SET                                 = 0x0000,
     CMSG_DEBUG_ACTIONS_START                              = 0x0000,
     CMSG_DEBUG_ACTIONS_STOP                               = 0x0000,