The Defense Department has cancelled plans to buy 15 Russian Mi-17 helicopters from state-owned enterprise Rosoboronexport , Reuters reported Wednesday.

Warren Strobel writes the scuttled deal followed bipartisan criticism after reports surfaced that the Russian manufacturer also deals in arms exports to Syria.

According to Reuters, the $345 million in cancelled aircraft purchases was part of a larger, $1.1 billion multiple-year contract announced in August.

Lawmakers also raised matters regarding the helicopters’ price tag and maintenance they will demand from the Afghan military, according to the report.