In 2017, net cash from operating activities increased by EUR 372 million to EUR 993 (621) million, due to a EUR 260 million increase in comparable EBITDA, a EUR 193 million decrease in realised foreign exchange gains and losses, a EUR 133 million decrease in income taxes paid and a EUR 183 decrease in working capital compared to the previous year. The foreign exchange gains and losses of EUR -83 (110) million relate to the rollover of foreign exchange contract hedging loans to Russian and Swedish subsidiaries. In June 2016, Fortum paid income taxes in Sweden totalling EUR 127 million regarding an ongoing tax dispute. The change in working capital in 2017 was EUR 81 (-102) million. The biggest impact was the effect of the daily cash settlements for futures in Nasdaq OMX Commodities Europe