CTV News is reporting that the event in Heritage Minister Shelly Glover's riding included members of Winnipeg's arts community, and Glover's department is responsible for arts and culture.
CTV says it obtained an invitation to the event that indicated those invited were primarily from Winnipeg's cultural community.
Federal conflict-of-interest rules forbid cabinet ministers from soliciting funds from anyone who has lobbied or is likely to lobby the minister's department.
CTV says Glover's office acknowledged some guests at the fundraiser did have dealings with her department so she isn't going to accept any of the $1,200 dollars raised.
Glover also told CTV her riding association sent the invitations and she didn't draw up the guest list.
She also told the network that she has contacted the federal ethics commissioner to determine if the fundraiser is an issue.
Liberal MP Ralph Goodale and New Democrat Charlie Angus both told CTV the fundraiser was improper.