LINQ, where clause if field is int?

Given the following LINQ where clause :

plannedPosition.Id is of type int?

pmArray is of type int[]

//Works
where
pmArray.Contains(plannedPosition.Id.Value)


//Does not work - will give a design time error
where
pmArray.Contains(plannedPosition.Id)
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How can I make the query more robust to ensure that no null run type exceptions occur?

How about:

where plannedPosition.Id != null && pmArray.Contains(plannedPosition.Id.Value)