Australia's T20 World Cup semi-final side is expected to be boosted by the inclusion of Alyssa Healy after the Australian star sat out of Saturday's win over South Africa.

Healy sat out of the six-wicket win as a precautionary measure due to a quad concern, but the Australians are confident the star wicketkeeper-opener will feature in Thursday's do-or-die semi-final match.

The 32-year-old had only just recovered from a calf injury heading into the tournament, but has continued to impress throughout, hitting an unbeaten 54 off 43 balls in Australia's convincing win over Sri Lanka.

Despite Healy spending the match against South Africa on the sidelines, all-rounder Tahlia McGrath revealed it was more of a precautionary measure than a big injury concern.

"It was more of a precautionary measure with coming off a serious calf injury and with a pretty hectic schedule," McGrath said.

"We expect her to be fully fit and ready to go for us in the semi-finals."

Australia are yet to learn who else will feature in Thursday's clash in Cape Town, but India loom as their likely opponents after a loss to England on Saturday night.