SIOUX FALLS, S.D. (AP) — The South Dakota Supreme Court says a Sioux Falls hospital did not wrongfully fire a nurse after finding errors in her log of medication. Avera McKennan Hospital terminated Stephanie Henning in 2016 after a routine medication log check turned up missing opioid pills.

Henning denied wrongdoing and sued Avera, claiming it wrongfully fired her and defamed her without sufficient evidence. The Second Circuit Court ruled in favor of Avera and Henning appealed, the Argus Leader reported. The Supreme Court this week said claims of wrongful termination or breach of contract couldn’t be met because Henning was an at-will employee.