Was it wrong to look?

new neighbors moved in today.they don't have any curtains and tonight i saw 3 woman take showers really late at night one after each other- i think they thought no one would be looking so late at night. i believe their sisters. well i saw them all completely naked... i know it was wrong but i am human and just couldn't resist curiousity took the best of me. did i really do anything wrong since they basically have no curtains and i can see clearly into their windows from my bedroom window? They installed curtains the next day.