Working memory (WM) training is demanding both regarding time and cognitive endurance. Many participants who could benefit from completing the training lose their motivation to do so. Hence, it is valuable to address compliance with the training protocol from a motivational angle. Studies have shown that subjective views on intelligence influence motivation, where individuals believing that intelligence can increase with training, that is, an incremental mind-set, tend to try harder after setbacks and that high-intrinsic motivation relates to higher academic performance. We used questionnaires to measure the extent to which mind-set and intrinsic motivation influenced compliance to complete a WM training program of a minimum of 20 sessions of WM training. Only 53 out of 112 recruited participants, (13years old (SD=.61)) completed the training. Our results showed that mind-set and motivation significantly predicted compliance to training, with high motivation and incremental mind-set being associated with more completed sessions.