The National Rifle Association received just over $2,500 in funds from Russians or Americans living in Russia since 2015, the gun rights advocacy organization told a Senate lawmaker, according to a report on Wednesday.

In the letter to Sen. Ron Wyden (D-Ore.) sent Wednesday, the NRA revealed the amount it received overall was $2,512.85 mainly for “routine payments” for magazine subscriptions or membership dues, NPR reported.

“Of this total, about $525 was from two individuals who made contributions to the NRA,” the group said in the letter.

Wyden, a member of the Senate Intelligence Committee, wrote to the NRA last month seeking information about the funds after reports said the FBI was investigating whether Russian money was routed through the organization to help Donald Trump’s 2016 presidential campaign.

“Finally, we have no Russian nationals in any of our major donor programs,” the NRA letter said.