Albion are keeping Scott Flinders for the rest of the season.
Crystal Palace chief Peter Taylor has agreed to let him stay for a third and final month.
Flinders' second month on loan to the Seagulls ended with Saturday's 1-0 home defeat by Bradford City.
The former Barnsley custodian has kept four clean sheets and conceded nine goals in ten games since arriving in Februrary.
Boss Dean Wilkins is happy to have him for Albion's remaining three matches at Swansea on Saturday, at home to Oldham and away to Cheltenham.
Wilkins said: "He has done well so we have extended the loan. We have been pleased with him and he is enjoying it here.
"He has settled in really well to the group. He gets on well with the lads."
Meanwhile, Wilkins has been alerted by the availability of former loan signing Andrew Whing, who is being released by Coventry at the end of the season.
Right-back Whing impressed when he was with Albion from October to December, helping them to eight wins in 15 appearances.
Wilkins wanted to buy him but chairman Dick Knight's offer fell well below Coventry's asking price.
Asked if he will be making a move for Whing again, Wilkins said: "It's a bit early to say. We are aware of his situation. He did a really good job for us."
Would you like to see Andrew Whing back at Albion? Let us know your thoughts
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules hereComments are closed on this article