The Montenegrin striker has warned his side not to get carried away following their good start to the season
The Turin side thrashed Parma 4-1 on matchday one and added three more points to their tally on Sunday as they defeated Siena 1-0.
As a result, Juventus currently sit joint top of the Serie A table, but Vucinic insists that they must not become complacent.
"We've won our first two matches, but we have to keep our feet on the ground and continue our hard work," Vucinic was quoted as saying on the club's official website.
"Being top of the table is important, but we should not forget that just one defeat could thwart our efforts. We have to be focussed in every game we play."
Juventus meet Bologna in Turin on Wednesday in their third Serie A match of the season as they look to maintain their perfect record.