FN kritiserer Nepal for ikke å ha lettet på tollbestemmelsene. Det gjør at hjelpen hoper seg opp på flyplassen i Kathmandu, en helt uakseptabel situasjon i lys av skrikende behov.
UN humanitarian chief Valerie Amos said Nepal had a duty to provide faster customs clearance for relief supplies.
Many people are yet to receive the aid, which is piling up at Kathmandu airport following, a week after the 7.8-magnitude earthquake.
At least 6,840 have died. Authorities have ruled out finding more survivors.
On Saturday Baroness Amos said she had reminded Prime Minister Sushil Koirala that Nepal had signed an agreement with the UN in 2007 for simpler and faster customs clearance for relief aid in a disaster.
«He has undertaken to ensure that happens, so I hope that from now we will see an improvement in those administrative issues,» she told AFP news agency.
Nepal er et av verdens mest korrupte land. Myndighetene insisterer fortsatt på inspeksjon av det som kommer inn.
Nepal lifted import taxes on tarpaulins and tents on Friday but home ministry spokesman Laxmi Prasad Dhakal said all goods arriving from abroad had to be inspected.
«This is something we need to do,» he said.