If you have been patiently waiting for “Uncharted 4: A Thief’s End” to come out on PS4, then you may have to extend that patience a little longer.

GameSpot reports that Naughty Dog, the developer behind the PS4-exclusive game, has pushed back its release date five weeks further. The website details that the announcement was made by directors Bruce Straley and Neil Druckmann. Both executives cited the need to make sure that the game followed standards as the main reason for the delay.

The website further quotes the statement of the directors as follows:

“This is our largest Uncharted, and the team has been working incredibly hard to meet the challenge of closing out the game’s development in a timely manner. However, as we started to approach our final deadlines and started wrapping up the game’s levels, we realised that several key sequences needed extra resources to bring them to the finish line.”

The circumstances mentioned above are the major factors that made Naughty Dog decide to extend the release date and provide them with the time to resolve issues.

Meanwhile, Kotaku notes that this is not the first delay “Uncharted 4: A Thief’s End” has encountered.

The website details that the game initially had a 2015 release date, then later on was re-scheduled to March 18, 2016. Considering that this is the second re-scheduling done for “A Thief’s End”, it is hard to tell whether or not it will be moved again to a later date in the months to come.

Engadget details that from March 18, 2016, “Uncharted 4: A Thief’s End” will come out on PS4 on April 26 in the United States, April 27 across parts of Europe, and April 29 in the United Kingdom.

“Uncharted 4: A Thief’s End” is said to be the final chapter of Nathan Drake’s adventures.