Mercedes has braced-up its T-wing aerodynamic device following its failure yesterday morning in FP3 and a subsequent demand by the FIA.
The appendage's breakage was the second this season for Mercedes, with the thin wing also falling off Valtteri Bottas' car in China.
"We fixed the problem," Wolff told reporters in Bahrain after qualifying.
"It has been strengthened. You wouldn't be able to take that thing off with a baseball bat now, so it should be OK."
Concerns remain however, and the FIA has apparently scheduled a meeting of the sport's technical working group for next Friday, with the future of the T-wings and engine cover 'shark fins' on the agenda.
Red Bull's Christian Horner has been leading the call for the governing body to ban both the T-wing and the ubiquitous dorsal fin. But Wolff suggests that Horner's grievances go beyond aesthetic or safety considerations.
"It's clear Christian needs to do that. You're trying to take parts off from other cars that function.
"It's perfectly understandable - plus, it ruined their floor."
GALLERY: All the pictures from Saturday in Bahrain
Keep up to date with all the F1 news via Facebook and Twitter
Kimi Antonelli is one step away from F1 immortality. A commanding victory in Austin, a…
Max Verstappen left the United States Grand Prix with a podium finish but little satisfaction,…
Kimi Antonelli is ready to put the finishing touches to a remarkable Formula 1 breakthrough,…
George Russell cut a frustrated figure after a miserable United States Grand Prix, admitting his…
Kimi Antonelli inched closer to a historic F1 world title in Austin on Sunday with…
Full race results from the United States Grand Prix at the Circuit of the Americas,…