A future interest may be defeated in any manner or by any act or means which the party creating such interest provided for or authorized in the creation thereof, nor is the future interest, thus liable to be defeated, to be on that ground adjudged void in its creation.
Mont. Code Ann. § 70-1-421
Future interest subject to defeat -- how -- not void
En
Official source: Montana Code Annotated (Montana Legislature). Reproduced from public-domain Montana statutes; confirm against the official source for the current text. Not legal advice.