The use of actuarial instruments to predict sex offender recidivism has gained increasing credibility in recent years. This paper is one in a series examining the impact of dynamic inpatient group therapy upon the predictive influence of static risk factors on recidivism among adult sex offenders. Successful completion of the Phoenix Program (Alberta Hospital Edmonton) has been shown to ameliorate the influence of static risk factors on sexual offense recidivism. Many studies have reported that sex offenders who have male victims are more likely to re-offend than those who do not have male victims. A sample of N=513 convicted adult male sex offenders was examined regarding the relationship between the static risk factor of having male victims, subsequent re-offense, and treatment impact. Interestingly, ever having had a male victim did not significantly correlate with sex offense recidivism, for either treatment completers, non-completers, or the combined group. However, having exclusively male victims was correlated with sex offense recidivism, but only among non-completers of the program (r=.155; p=.017). Analysis of a subset of 422 child molesters yielded a similar result, in that having male victims exclusively was only associated with sex offense recidivism among treatment non-completers (r=.189, p=.009).