
    Argued and submitted March 25,
    imposition of child support arrearage obligation of $6,300 reversed; otherwise affirmed April 28, 2004
    In the Matter of the Marriage of Leslie G. MASON, Respondent, and Carl D. MASON, Appellant.
    
    94C-30176; A120804
    89 P3d 1215
    J. Michael Alexander argued the cause for appellant. With him on the brief was Swanson, Lathen, Alexander & Mc-Cann, PC.
    No appearance for respondent.
    Before Haselton, Presiding Judge, and Linder and Ortega, Judges.
    PER CURIAM
   PER CURIAM

Husband appeals from a judgment that terminated his spousal support obligation based on a substantial change of circumstances and that also required him to pay a retroactive child support obligation of $6,300. The trial court imposed the retroactive support obligation sua sponte without wife requesting such relief by way of any appropriate motion or pleading. We agree with husband that, in the circumstances presented here, the court’s sua sponte imposition of the retroactive support obligation was erroneous. See Richards and Richards, 95 Or App 281, 284, 768 P2d 927 (1989) (in the absence of a motion to modify, a retroactive support obligation could not be imposed on a prior custodial parent following a change of physical custody).

Imposition of child support arrearage obligation of $6,300 reversed; otherwise affirmed.  