(someone's) wires crossed

Translations
перепутать (чьи-то) провода
We must have had our wires crossed, because I thought the meeting was tomorrow, not today.
Должно быть, мы перепутали провода, потому что я думал, что встреча завтра, а не сегодня.
Definitions
The phrase '(someone's) wires crossed' means that there has been a misunderstanding or confusion between people, often due to miscommunication. It can also refer to someone being confused or mistaken about something.
Words
someone

pronoun
кто-то
s
чей-то
wires

noun
провода
crossed

adjective
перепутаны