Android : Picasso placing images in wrong imageview

I'm using Picasso to load my images into my imageviews but whenever i scroll down and back up then sometimes the images get loaded in another imageview. I have no idea how that happens. This is my getView from my adapter:

    @Override
        public View getView(int position, View convertView, ViewGroup parent) {

            if (inflater == null){
                inflater = (LayoutInflater) activity
                        .getSystemService(Context.LAYOUT_INFLATER_SERVICE);}
            if (convertView == null) {
                convertView = inflater.inflate(R.layout.event_item, null);
            }

            txtName = (TextView) convertView.findViewById(R.id.name);
            txtStart_time = (TextView) convertView.findViewById(R.id.start_time);
            txtLocationName = (TextView) convertView.findViewById(R.id.locationName);
            event_id = (TextView) convertView.findViewById(R.id.event_id);
            letter = (TextView) convertView.findViewById(R.id.txtImgEvent);
            image = (ImageView) convertView.findViewById(R.id.imgViewEvent);

            // getting event data for the row
            p = eItems.get(position);

            //name
            txtName.setText(p.getName());

        //event_id
        event_id.setText(p.getEvent_id());

        //image
        if(p.getPic().length() > 1){
            //put image into imageview
            Picasso.with(activity)
                    .load(p.getPic())
                    .into(image);
            letter.setText("");
        }else {
            //first letter of name
            letter.setText(p.getName().substring(0, 1));
        }

        return convertView;

    }