You'd better watch out: “Santa Claus Is Comin' to Town” is comin' back into the hands of the heirs of a songwriter who composed it.

Rejecting a lower-court ruling, the U.S. Court of Appeals for the Second Circuit on Thursday ruled for a daughter and grandchildren of John Frederick Coots.

Coots, who wrote the music for hundreds of songs before his 1985 death, co-wrote the song in 1933 with James Lamont “Haven” Gillespie, who died in 1975.