Deportivo La Coruna coach Fernando Vazquez has warned his side there is still plenty more work to do to achieve the great escape.
Depor, seemingly nailed on for relegation six weeks ago, have won four and drawn one of their last five Primera Division games to give themselves a real chance of beating the drop.
The revival has coincided with Vazquez's appointment in February.
But they travel to Real Betis back in the bottom three on goal difference thanks to victories this weekend for their relegation rivals Celta Vigo and Granada, and Vazquez told his players they cannot afford to let up now.
``We are not safe,'' Vazquez said in Marca. ``That is the danger, that that way of thinking is something that can enter the minds of the players.
``I say to the players and the fans: that last six kilometres of the marathon are always the toughest. We must be alert.''
The visitors have plenty of reason for optimism ahead of the trip, though, having not tasted defeat since March 9, and that was at the Nou Camp.
They have scored 14 goals in their last five games, with their winning run only coming to an end with a 1-1 draw with Athletic Bilbao last time out.
Their opponents Betis still harbour hopes of European qualification, but have won just once in their last five.
Vazquez, who coached Betis from 2000 to 2001, will be back on the bench after serving a two-match touchline ban for his dismissal against Real Zaragoza.