How to create full-text catalog as default catalog?

Question

This would save me the redundant ON MyCatalog phrase when I create full-text indices.

For example,

CREATE FULLTEXT INDEX ON MyTable
(
    MyField1,
    MyField2,
    MyField3
)
KEY INDEX PK_MyKey ON MyCatalog  /* I want MyCatalog to be default, so I don't have to specify*/
WITH CHANGE_TRACKING AUTO

With MyCatalog set as default catalog, I wouldn't have to specify ON MyCatalog every time I want to create a full-text index. So how can I make MyCatalog default on this database?