Poor error message when unevaluatedProperties is a schema

[Julian]

from jsonschema.validators import validator_for

schema = {"unevaluatedProperties": {"const": 12}}
print(next(validator_for(schema)(schema).iter_errors({"type": 37})))

produces the misleading:

Unevaluated properties are not allowed ('type' was unexpected)

Failed validating 'unevaluatedProperties' in schema:
    {'unevaluatedProperties': {'const': 12}}

On instance:
    {'type': 37}