OMAHA, Neb. (AP) — Omaha’s zoo is blaming staff miscommunication for an incident in which a boy using a wheelchair was barred from the zoo’s new splash pad.

Nicole Steng said she took her 8-year-old son, Titus, in July to the new Alaskan Adventure at the Henry Doorly Zoo and Aquarium.

But a young staffer and zoo supervisor told them Titus’ wheelchair couldn’t go onto the pad because pad’s ground cover wasn’t durable enough to handle the wheels.

There were no signs posted to that effect, and zoo spokeswoman Dawn Ream says that’s because wheelchairs are allowed. Ream says electric-powered rental scooters are barred because they aren’t waterproof.

Ream blamed the incident on miscommunication and says the rules were made clear at a meeting in mid-August.