Prisma where every filter on many-to-many

I think I am being super dumb, but I have a many-to-many relationship of

Entry

Entry

Campaign

Campaign

. I want to find all entries connected to a given campaign. I thought I could just do

const entries = await ctx.prisma.entry.findMany({
  where: {
    campaigns: { every: { id: { equals: campaignId } } },
  },
});

const entries = await ctx.prisma.entry.findMany({
  where: {
    campaigns: { every: { id: { equals: campaignId } } },
  },
});

but this is returning entries that aren't connected to any campaigns as well

According to the docs this should only return every

Entrry

Entrry

that has a

Campaign

Campaign

with the given id, or am I wrong? I can solve this by adding

some: {}

some: {}

to the filter (to exclude every

Entry

Entry

without a

Campaign

Campaign

, but this seems unnecessary to me)