Leicester continued their 100% start to the season with a narrow victory at winless Huddersfield.
Home goalkeeper Lee Nicholls saved Denis Praet's shot in a rare moment of attacking intent in a drab first half.
The Foxes took the lead in the 73rd minute when Stephy Mavididi made a yard of space for himself with clever footwork and then thumped a shot that flew by Nicholls at his near post.
Huddersfield pushed forward in search of a leveller and felt they should have had a penalty when Pat Jones went down under a challenge from Hamza Choudhury in the area, but the referee was unmoved.