A state district court judge has ruled the proposition to match firefighter's pay with police officers unconstitutional.
Judge Tanya Garrison ruled the city can't pass a law that goes against the state's existing collective bargaining law.
Mayor Turner shared the news during the middle of Wednesday's city council meeting. He said Judge Garrison's ruling kicks in immediately and that means no more 29 percent raises for firefighters mandated by Prop B.
The Houston Professional Fire Fighters Association said the court's ruling on Prop B is a "disappointment."
As of Wednesday afternoon, the union already filed paperwork to appeal the ruling.
"The mayor's vindictive, taxpayer-funded campaign against Houston firefighter families continues. While this fight goes on, we will continue to deliver excellent service, be good stewards of city resources, and give back to the communities we serve," the union said in a statement.
Mayor Sylvester Turner said Prop B being ruled unconstitutional means there will be no layoffs of firefighters and city workers. There will also be no demotions within the fire department.