A Facebook message a woman sent to her former sex partner announcing she was pregnant was not sufficient legal notice to support terminating the father’s parental rights, the Oklahoma Supreme Court ruled this week.

“This Court does not believe that attempts to provide notice via Facebook comport with the requirements of due process,” Justice Douglas Combs wrote in his majority opinion.

The Supreme Court voted 6-3 to overturn two lower court decisions that had upheld the termination of Billy McCall’s parental rights in a Rogers County adoption case. The case will now go back to district court to reconsider whether McCall’s parental rights should be terminated.

How much of an obligation a pregnant woman has to seek out and notify an absent father has been a point of contention in some parental rights termination cases.