diff --git a/src/server/game/Server/Protocol/Handlers/PetHandler.cpp b/src/server/game/Server/Protocol/Handlers/PetHandler.cpp
index c3b11ddf835..74a5ae57eb6 100755
--- a/src/server/game/Server/Protocol/Handlers/PetHandler.cpp
+++ b/src/server/game/Server/Protocol/Handlers/PetHandler.cpp
@@ -479,7 +479,7 @@ void WorldSession::HandlePetSetAction(WorldPacket & recv_data)
 
     if (!pet || pet != _player->GetFirstControlled())
     {
-        sLog->outError("HandlePetSetAction: Unknown pet or pet owner.");
+        sLog->outError("HandlePetSetAction: Unknown pet (GUID: %u) or pet owner (GUID: %u)", pet->GetGUIDLow(), _player->GetGUIDLow());
         return;
     }