The Magpies built upon their big win over Liverpool last weekend.
The Magpies have now escaped the relegation zone and moved up to 15th in the table, with wins over Liverpool and Tottenham helping them to escape the bottom three.
Both those victories saw drastic up turns in not only their quality, but also their desire and determination to secure all three points, something which has been sorely missing this season.
They cannot afford to rest on their laurels though, with relegation rivals Aston Villa up next at St James Park, and Wijnaldum has urged them not to drop their levels of effort.
"That's what we have to show, that we have turned a corner, because now we have won two times in a row we want to win a lot more,” he told Sky Sports.
“But we still must work hard and put in a good performance to win games.”
"You can't think if you win two times that 'everything has changed' because we still have to work hard and show that we are better than before."
This weekend’s clash with Villa offers to be the first big relegation six pointed of the season with both sides at the wrong end of the table.
While Newcastle’s performances have taken a real upturn in recent weeks, Remi Garde’s side are still struggling to change their own fortunes, and are now eight points from safety.