[rules-users] help with 3.1 M

Hello, When using the following two rules with an empty working memory both rules get fired: =================================== rule rule1 when not Person(gender == Consts.Unknown) then System.out.println("rule1"); end rule rule2 when exists Person(gender == Consts.Unknown) then System.out.println("rule2"); end =================================== . Can anyone help me with this? Thanks