10/25/2007 at 04:30 PM EDT
's first major post-jail philanthropic effort – her planned trip to Rwanda
– has been postponed by the foundation that organized it.
"Due to the restructuring of the Playing for Good Foundation, the philanthropic trip to Rwanda that the foundation had previously planned with Paris Hilton has been postponed," the organization said Thursday in a statement.
"Paris has been a loyal and gracious supporter of Playing For Good but the foundation has to regrettably reschedule this trip. Playing for Good would like to thank Ms. Hilton for her generosity and her continued support of this initiative and is looking forward to rescheduling the trip with her at a later time."
After being released from jail in June after serving 23 days for violating probation in a DUI case, Hilton said she wanted to change her image
– and make charity work a focal point of that effort.
In September, she announced her plan to visit Rwanda, the scene of genocide in 1994.
"There's so much need in that area, and I feel like if I go, it will bring more attention to what people can do to help," she told E! Online at the time.