The Ospreys say they are unhappy with communication from Celtic Cup organisers over the semi-final draw.
If the Celtic League champions beat Ulster in their cup quarter-final at St Helen's, Swansea, they must travel to face the Scarlets or Dragons.
"As champions we would have hoped for a home draw," said manager Derwyn Jones.
"But our real problem is communication. The draw was made in January and we've only just been informed, there's been a breakdown of communication."
Despite his concerns, Jones said the team will face up to the challenges in a positive frame of mind.
"First we have to focus on beating Ulster, that will be a tough game," he told BBC Sport Wales.
"If we get through we will go to Stradey Park or Rodney Parade with a lot of confidence given the season we've had so far."