The Swiss National Bank on Thursday cut interest rates by a further 25 basis points to 0% — adding to concerns over a potential return to negative rates.

The reduction was widely expected by markets ahead of the decision, after traders priced in an around 81% chance of a quarter-point cut and around a 19% chance of a bigger 50-basis-point cut.

“Inflationary pressure has decreased compared to the previous quarter. With today’s easing of monetary policy, the SNB is countering the lower inflationary pressure,” the central bank said in a statement.

“The SNB will continue to monitor the situation closely and adjust its monetary policy if necessary, to ensure that inflation remains within the range consistent with price stability over the medium term,” it added.

While other nations continue to battle inflation, Switzerland faces deflation, with consumer prices falling by an annual 0.1% in May.