Leyton Orient Fans Trust has returned the £2,500 which NTFC Supporters Trust donated to the east London club's regeneration fund.
LOFT Treasurer Peter Osborne explained: "We were, and are, massively appreciative of the extraordinarily generous donation you made to our regeneration fund.
"The board however feel that it would not be appropriate for us to hold on to these funds generated from your own support.
"We would like to thank you again for your support and all of us at Orient wish your club future success."
The money will go back into the Trust's 'rainy day' fighting fund, part of which is ring fenced for Supporters Trusts of clubs whose very existence is under threat.