Bad grammar does not necessarily render a contract ambiguous.

That was the sensible conclusion of this United States judgment.

Hall sued her former employer, Rag-O-Rama when it fired her less than a year after promoting her to an area-manager position.  A poorly drafted sentence in the employment contract recorded:

Hall is reminded of the

Ambiguous insurance contracts may be construed against the insurer. In case of doubt and where there is ambiguity a contract, including an insurance policy, may be construed against the contracting party by whom it was formulated.

This is generally known as the contra proferentem rule (see for example, Pereira v Marine and Trade Insurance Co