Change is to if
@@ -159,7 +159,7 @@ underpaid = datastore.createQuery(Employee.class)
```
The `field()` method here is used to filter on the named field and returns an instance of an interface with a number of methods to build
-a query. This approach is helpful is compile-time checking is needed. Between javac failing on missing methods and IDE auto-completion,
+a query. This approach is helpful if compile-time checking is needed. Between javac failing on missing methods and IDE auto-completion,
query building can be done quite safely.
