TOPEKA, Kan. (AP) — Republican Gov. Sam Brownback has stalled an effort by Kansas legislators to override one of his vetoes by warning that it could hurt the state’s credit ratings.

The developments Thursday in the Senate involved a bill to protect the aging Docking State Office Building near the Statehouse from demolition.

The demolition was part of a $20 million project to replace Docking’s power plant for nearby government buildings with a new plant. Bipartisan opposition prompted Brownback to cancel it.

The bill tied the project’s cancellation to lawmakers’ refusal to provide money for it. Brownback vetoed it last week, saying it was unnecessary.

Supporters of the bill wanted to vote to override the veto Thursday, but Brownback’s warning about the state’s credit ratings caused them to drop the effort until next week.