diff --git a/src/nostalgia/player/app.cpp b/src/nostalgia/player/app.cpp
index 19cd31d8..0b555dc0 100644
--- a/src/nostalgia/player/app.cpp
+++ b/src/nostalgia/player/app.cpp
@@ -65,7 +65,7 @@ static void testKeyEventHandler(turbine::Context &tctx, turbine::Key key, bool d
 
 [[maybe_unused]]
 static ox::Error runTest(turbine::Context &tctx) {
-	constexpr ox::StringView TileSheetAddr{"/TileSheets/Charset.ng"};
+	constexpr ox::StringView TileSheetAddr{"/TileSheets/Charset.nts"};
 	constexpr ox::StringView PaletteAddr{"/Palettes/Chester.npal"};
 	OX_REQUIRE_M(cctx, gfx::init(tctx));
 	turbine::setApplicationData(tctx, cctx.get());
@@ -91,10 +91,10 @@ static ox::Error runTileSheetSetTest(turbine::Context &tctx) {
 	gfx::TileSheetSet const set{
 		.bpp = 4,
 		.entries = {
-			{ .tilesheet = ox::StringLiteral{"/TileSheets/Chester.ng"}, .sections{{.begin = 0, .tiles = 1}} },
-			{ .tilesheet = ox::StringLiteral{"/TileSheets/AB.ng"},      .sections{{.begin = 0, .tiles = 2}} },
-			{ .tilesheet = ox::StringLiteral{"/TileSheets/CD.ng"},      .sections{{.begin = 0, .tiles = 2}} },
-			{ .tilesheet = ox::StringLiteral{"/TileSheets/AB.ng"},      .sections{{.begin = 1, .tiles = 1}} },
+			{ .tilesheet = ox::StringLiteral{"/TileSheets/Chester.nts"}, .sections{{.begin = 0, .tiles = 1}} },
+			{ .tilesheet = ox::StringLiteral{"/TileSheets/AB.nts"},      .sections{{.begin = 0, .tiles = 2}} },
+			{ .tilesheet = ox::StringLiteral{"/TileSheets/CD.nts"},      .sections{{.begin = 0, .tiles = 2}} },
+			{ .tilesheet = ox::StringLiteral{"/TileSheets/AB.nts"},      .sections{{.begin = 1, .tiles = 1}} },
 		},
 	};
 	constexpr auto bgPalBank = 1;