The influence of black currant damages during mechanical harvest on future yielding was investigated. Fruit were harvested with a harvester running at 1.2 km·h⁻¹ working speed, shaking fingers amplitude of 80 mm and four vibration frequencies. The experiment was planned for six years. The results of five years are presented herewith. Accuracy of harvest amounted to over 90% for two varieties at the frequency of 13.3 Hz. Increased vibration frequency sligtly increased harvest accuracy but also plant damages were significantly higher. In case of 'Ojebyn' cv. at the frequency of 18.3 Hz 35% leaves were shaken off, 32.9% of the year shoots and 36.0% of frame branches were bruised. In the third year a decrease of yield as related to fruit hervested with 13.3 Hz frequency amounted to 40%. In case of 'Titania' cv. at the 18.3 Hz frequency the mean percentage of shaken off leaves was slightly lower but shoot bruises were greater and fruit yield was lower by 42%.