set the record straight

US /sɛt ðə ˈrɛkərd streɪt/
UK /sɛt ðə ˈrɛkərd streɪt/
"set the record straight" picture
1.

to correct a misunderstanding or a false impression

:
I need to set the record straight about what happened at the meeting.
Let me set the record straight: I never said that.