12mth fixed tenancy with get out clause notice time

Hi, my current AST is private between me and the LL which states it is a 12 month fixed term with a clause to leave any time after 6 months. However, also in the text states tenant must give TWO months notice but as we all know the law requires tenants only need give one month as opposed to LL's who need to give two. So does that law still stand even tho it's a weird contract? ty