The European Union’s top regulator is calling on the European Central Bank (ECB) to strengthen its rules of engagement by putting a stop to banker meetings prior to rolling out policies.

Ombudsman Emily O’Reilly told Reuters that she would pen a letter to the ECB’s President Mario Draghi about promoting transparent behavior ahead of setting policy. Reilly said that ECB officials should not give investors any advantage over rivals prior to setting policy such as interest rates.