diff --git a/src/game/Object/Player.cpp b/src/game/Object/Player.cpp
index 921ec057..f0dd4a80 100644
--- a/src/game/Object/Player.cpp
+++ b/src/game/Object/Player.cpp
@@ -18659,7 +18659,7 @@ PartyResult Player::CanUninviteFromGroup() const
         { return ERR_NOT_LEADER; }
 
     if (InBattleGround())
-        { return ERR_INVITE_RESTRICTED; }
+        { return ERR_NOT_IN_GROUP; }  // error message is not so appropriated but no other option for classic
 
     return ERR_PARTY_RESULT_OK;
 }
diff --git a/src/game/Server/WorldSession.h b/src/game/Server/WorldSession.h
index c07a8726..d122dbd7 100644
--- a/src/game/Server/WorldSession.h
+++ b/src/game/Server/WorldSession.h
@@ -70,14 +70,12 @@ enum PartyResult
     ERR_PARTY_RESULT_OK                 = 0,
     ERR_BAD_PLAYER_NAME_S               = 1,
     ERR_TARGET_NOT_IN_GROUP_S           = 2,
-    ERR_TARGET_NOT_IN_INSTANCE_S        = 3,
-    ERR_GROUP_FULL                      = 4,
-    ERR_ALREADY_IN_GROUP_S              = 5,
-    ERR_NOT_IN_GROUP                    = 6,
-    ERR_NOT_LEADER                      = 7,
-    ERR_PLAYER_WRONG_FACTION            = 8,
-    ERR_IGNORING_YOU_S                  = 9,
-    ERR_INVITE_RESTRICTED               = 13,
+    ERR_GROUP_FULL                      = 3,
+    ERR_ALREADY_IN_GROUP_S              = 4,
+    ERR_NOT_IN_GROUP                    = 5,
+    ERR_NOT_LEADER                      = 6,
+    ERR_PLAYER_WRONG_FACTION            = 7,
+    ERR_IGNORING_YOU_S                  = 8
 };
 
 enum TutorialDataState
diff --git a/src/game/WorldHandlers/GroupHandler.cpp b/src/game/WorldHandlers/GroupHandler.cpp
index 52b46ef2..4ed86449 100644
--- a/src/game/WorldHandlers/GroupHandler.cpp
+++ b/src/game/WorldHandlers/GroupHandler.cpp
@@ -88,7 +88,7 @@ void WorldSession::HandleGroupInviteOpcode(WorldPacket& recv_data)
 
     if (GetPlayer()->GetInstanceId() != 0 && player->GetInstanceId() != 0 && GetPlayer()->GetInstanceId() != player->GetInstanceId() && GetPlayer()->GetMapId() == player->GetMapId())
     {
-        SendPartyResult(PARTY_OP_INVITE, membername, ERR_TARGET_NOT_IN_INSTANCE_S);
+        SendPartyResult(PARTY_OP_INVITE, membername, ERR_ALREADY_IN_GROUP_S); // error message is not so appropriated but no other option for classic
         return;
     }
 
@@ -336,7 +336,7 @@ void WorldSession::HandleGroupDisbandOpcode(WorldPacket& /*recv_data*/)
 
     if (_player->InBattleGround())
     {
-        SendPartyResult(PARTY_OP_INVITE, "", ERR_INVITE_RESTRICTED);
+        SendPartyResult(PARTY_OP_INVITE, "", ERR_NOT_LEADER);  // error message is not so appropriated but no other option for classic
         return;
     }