Former Ghana captain, Asamoah Gyan says the performance of the team is not a fluke adding that they must maintain their performance.
His comments come after Ghana's win over South Korea in their second Group H game on Monday at the Education City Stadium.
After suffering a defeat against Portugal on Thursday, the Black Stars had to beat the Asian side to maintain their hope alive.
However, a brace from Mohammed Kudus and Mohammed Salisu saw Ghana pick their first win of the tournament despite two quick goals from Cho Gue-sung.
Reacting to the win, the 37-year-old said the performance of the team against Portugal and South Korea is a fluke but cautioned the team to be consistent to prove that they are in to compete.
"Great performance from the Black Stars and this performance is not a fluke," he said on SuperSport.
"If they can maintain this performance, it will prove that they are in to compete," Gyan, who is the country's all-time leading goalscorer with 51 goals added.
Ghana will take on Uruguay in their final group game on Friday at the Al Janoub Stadium with kick-off scheduled at 15:00GMT.