Prostate diffusion-weighted (DW) MRI based on single-shot echo planar imaging (EPI) can suffer from geometric distortions caused by off-resonance magnetic field at the prostate-rectal air interface. Although techniques exist for effective distortion correction in brain imaging, such approaches may struggle with the severe distortions observed in prostate imaging. Here we focus on applying a recently developed model-based reconstruction technique to correct distortions in typical clinically used prostate DW-MRI. The distortion correction is feasible and may improve prostatic zonal anatomy in DW-MRI. Additionally, corrected averaged high b-value datasets show higher SNR than uncorrected dataset and may further help to identify tumours.