18 Pa.C.S. § 5108: Compounding.

(a) Offense defined.--A person commits a misdemeanor of the second degree if he accepts or agrees to accept any pecuniary benefit in consideration of refraining from reporting to law enforcement authorities the commission or suspected commission of any offense or information relating to an offense.

(b) Defense.--It is a defense to prosecution under this section that the pecuniary benefit did not exceed an amount which the actor believed to be due as restitution or indemnification for harm caused by the offense.