The prominent credit agency, Standard and Poors, says Papua New Guinea's rating may reportedly be affected by the ongoing diplomatic spat with Australia.
PNG's Prime Minister, Sir Michael Somare, suspended the Enhanced Co-operation Programme after being asked to remove his shoes during a security check at Brisbane airport last month.
Standard and Poors said in a statement to the news agency, Bloomberg, that there didn't seem to be a serious intention to cancel the aid programme.
But it says nevertheless, any serious move to cancel this programme is likely to affect Papua New Guinea's rating.
Standard and Poors currently rates Papua New Guinea as B-plus, four levels below investment grade.