65 ILCS 55/9

Upon objection or motion for that purpose, the court in which said proceeding is pending may, in a summary way, inquire whether the officer making the report has omitted any property benefited; also whether or not the assessment, as made and returned, is an equitable and just distribution of the cost of said improvement. The court may either make such corrections or changes, or determine in general the manner in which the same shall be made, and refer the assessment roll to any competent person for revision, correction or alteration in such manner as the court may determine.