Hoskins scored the Hornets' winner against Ipswich on Tuesday night but had to go off after appearing to injure himself in the process.
However, the problem turned out to be cramp so Hoskins is in line to keep his place alongside Heidar Helguson in attack.
Will Buckley will be in the squad having got two reserve games under his belt in the past week.
The winger has yet to make his debut since joining from Rochdale in January due to a thigh strain.
Boss Malky Mackay has no other injury worries as his side go in search of a first away win in five months.