Toilet above back door

Dear Huang Chui Master and Web Master, I have one request for you to provide some advises. I just mistakely put the 2nd floor toilet up of the back door, however, there is cieling separated. people said it is not good but my house just newly built. I still dont want to repare if we could do something. Please provide any advise how to solve this. Perhaps we may change the door but it may take time. Thank you for your kindly advise. Best regards. Sousou