diff --git a/src/jasper/modules/world/src/studio/worldobjectseteditor/worldobjectseteditor-imgui.cpp b/src/jasper/modules/world/src/studio/worldobjectseteditor/worldobjectseteditor-imgui.cpp
index 8df9120..a70b5b0 100644
--- a/src/jasper/modules/world/src/studio/worldobjectseteditor/worldobjectseteditor-imgui.cpp
+++ b/src/jasper/modules/world/src/studio/worldobjectseteditor/worldobjectseteditor-imgui.cpp
@@ -32,7 +32,7 @@ WorldObjectSetEditorImGui::WorldObjectSetEditorImGui(
 	m_doc{*readObj<WorldObjectSet>(keelCtx(m_sctx), itemPath()).unwrapThrow()},
 	m_tileSheet{readObj<ngfx::TileSheet>(keelCtx(m_sctx), m_doc.tilesheet)
 		.or_value(keel::AssetRef<ngfx::TileSheet>{})},
-	m_tsPicker{"Tile Sheet Chooser", keelCtx(m_sctx), ngfx::FileExt_nts},
+	m_tsPicker{"Tile Sheet Chooser", keelCtx(m_sctx), ngfx::FileExts_TileSheet},
 	m_addPalPopup{"Palette Chooser", keelCtx(m_sctx), ngfx::FileExt_npal} {
 	auto &kctx = keelCtx(m_sctx);
 	auto const [tsPath, err] = getPath(kctx, m_doc.tilesheet);
@@ -114,7 +114,7 @@ void WorldObjectSetEditorImGui::drawTileSheetSelector() noexcept {
 	ig::InputTextWithHint("##Tile Sheet", "Path to Tile Sheet", m_tilesheetPath, tsFlags);
 	if (ig::DragDropTarget const d; d) {
 		auto const [fr, err] = ig::getDragDropPayload<studio::FileRef>("FileRef");
-		if (!err && endsWith(fr.path, ngfx::FileExt_ng)) {
+		if (!err && ngfx::isTileSheet(fr.path)) {
 			oxLogError(setTileSheet(fr.path));
 		}
 	}