Swiss Civil Code

Grounds for an­nul­ment are:

1.

that one of the spouses¹ was already mar­ried at the time of the wed­ding and the pre­vi­ous mar­riage had not been dis­solved by di­vorce or by the death of the pre­vi­ous spouse;

2.

that one of the spouses lacked ca­pa­city of judge­ment at the time of the wed­ding and has not re­gained such ca­pa­city since;

3.²

that the mar­riage was pro­hib­ited due to kin­ship;

4.³

one of the spouses has no in­ten­tion of liv­ing with the oth­er, but wishes to cir­cum­vent the pro­vi­sions on the ad­mis­sion and res­id­ence of for­eign na­tion­als;

5.⁴

a spouse has not mar­ried of his or her own free will;

6.⁵

one of the spouses is a minor, un­less the con­tinu­ation of the mar­riage is in the over­rid­ing in­terest of this spouse.