Some employment contracts will contain a double layer of protection, so not only is there a non-compete clause, but the employee is also required to sign a statement which agrees this is reasonable and necessary to protect the employer's interest.
The courts have stated that this type of statement or acknowledgement does not carry any weight when determining if a non-compete clause is reasonable and is irrelevant to the test of enforceability. The scope of the clause is what determines its validity, not the employee's or employer's perception of what is reasonable.