The appeals court reversed a ruling by a Wayne County judge who upheld the Detroit Elections Commission's decision to keep the issue off the ballot, the Detroit Free Press reported.
The Detroit Elections Commission said the measure conflicted with the state drug laws.
However, a 2-1 majority of the appeals court said that was not the election commission's decision to make.
"It was outside the authority of [city officials] to consider the substance and effect of the initiative and defendants have a clear legal duty to place the matter on the ballot," the court wrote.
Beyonce flaunts bikini body, Blue Ivy in vacation pics
Benedict Cumberbatch's dramatic reading of R. Kelly lyrics is just what you need