SpaceX successfully navigated its Falcon 9 booster rocket back to a floating platform Saturday, but the landing was too hard to count as a success.  However, “it bodes well for the future” says Elon Musk.

The rocket “ran out of hydraulic fluid right before landing,” Musk said on Twitter. “Upcoming flight already has 50% more hydraulic fluid, so should have plenty of margin for landing attempt next month.”

The main objective of the mission was a clear success, as the Falcon 9 booster placed a SpaceX Dragon capsule with 5200 pounds of food and equipment on track to rendezvous with the International Space Station.