diff --git a/src/keel/media.cpp b/src/keel/media.cpp
index 49263286..8d202cc3 100644
--- a/src/keel/media.cpp
+++ b/src/keel/media.cpp
@@ -46,7 +46,7 @@ static void clearUuidMap(Context &ctx) noexcept {
 	ctx.pathToUuid.clear();
 }
 
-void createUuidMapping(Context &ctx, ox::String filePath, ox::UUID const&uuid) noexcept {
+void createUuidMapping(Context &ctx, ox::StringView filePath, ox::UUID const&uuid) noexcept {
 	ctx.pathToUuid[filePath] = uuid;
 	ctx.uuidToPath[uuid.toString()] = std::move(filePath);
 }
@@ -54,7 +54,7 @@ void createUuidMapping(Context &ctx, ox::String filePath, ox::UUID const&uuid) n
 static ox::Error buildUuidMap(Context &ctx, ox::CRStringView path) noexcept {
 	oxRequire(files, ctx.rom->ls(path));
 	for (const auto &f : files) {
-		oxRequire(filePath, ox::join("/", ox::Array<ox::StringView, 2>{path, f}));
+		oxRequireM(filePath, ox::join("/", ox::Array<ox::StringView, 2>{path, f}));
 		oxRequire(stat, ctx.rom->stat(filePath));
 		if (stat.fileType == ox::FileType::NormalFile) {
 			oxRequire(data, ctx.rom->read(filePath));
diff --git a/src/keel/media.hpp b/src/keel/media.hpp
index 345e2cda..bd6ae6f4 100644
--- a/src/keel/media.hpp
+++ b/src/keel/media.hpp
@@ -91,7 +91,7 @@ ox::Result<keel::AssetRef<T>> readObjNoCache(
 
 #endif
 
-void createUuidMapping(Context &ctx, ox::String filePath, ox::UUID const&uuid) noexcept;
+void createUuidMapping(Context &ctx, ox::StringView filePath, ox::UUID const&uuid) noexcept;
 
 ox::Error buildUuidMap(Context &ctx) noexcept;
 
diff --git a/src/nostalgia/modules/core/src/studio/tilesheeteditormodel.cpp b/src/nostalgia/modules/core/src/studio/tilesheeteditormodel.cpp
index c0852cfb..7deade63 100644
--- a/src/nostalgia/modules/core/src/studio/tilesheeteditormodel.cpp
+++ b/src/nostalgia/modules/core/src/studio/tilesheeteditormodel.cpp
@@ -563,9 +563,9 @@ class PaletteChangeCommand: public TileSheetCommand {
 };
 
 
-TileSheetEditorModel::TileSheetEditorModel(turbine::Context *ctx, ox::String path):
+TileSheetEditorModel::TileSheetEditorModel(turbine::Context *ctx, ox::StringView path):
 	m_ctx(ctx),
-	m_path(std::move(path)) {
+	m_path(path) {
 	oxRequireT(img, readObj<TileSheet>(ctx->keelCtx, m_path));
 	m_img = *img;
 	if (m_img.defaultPalette) {
diff --git a/src/nostalgia/modules/core/src/studio/tilesheeteditormodel.hpp b/src/nostalgia/modules/core/src/studio/tilesheeteditormodel.hpp
index 6acca3f5..5fc3009f 100644
--- a/src/nostalgia/modules/core/src/studio/tilesheeteditormodel.hpp
+++ b/src/nostalgia/modules/core/src/studio/tilesheeteditormodel.hpp
@@ -36,7 +36,7 @@ class TileSheetEditorModel: public ox::SignalHandler {
 		ox::Bounds m_selectionBounds = {{-1, -1}, {-1, -1}};
 
 	public:
-		TileSheetEditorModel(turbine::Context *ctx, ox::String path);
+		TileSheetEditorModel(turbine::Context *ctx, ox::StringView path);
 
 		~TileSheetEditorModel() override = default;
 
diff --git a/src/nostalgia/modules/core/src/studio/tilesheeteditorview.cpp b/src/nostalgia/modules/core/src/studio/tilesheeteditorview.cpp
index adaa3765..a4da5243 100644
--- a/src/nostalgia/modules/core/src/studio/tilesheeteditorview.cpp
+++ b/src/nostalgia/modules/core/src/studio/tilesheeteditorview.cpp
@@ -11,8 +11,8 @@
 
 namespace nostalgia::core {
 
-TileSheetEditorView::TileSheetEditorView(turbine::Context *ctx, ox::String path):
-	m_model(ctx, std::move(path)), m_pixelsDrawer(&m_model) {
+TileSheetEditorView::TileSheetEditorView(turbine::Context *ctx, ox::StringView path):
+	m_model(ctx, path), m_pixelsDrawer(&m_model) {
 	// build shaders
 	oxThrowError(m_pixelsDrawer.buildShader());
 	oxThrowError(m_pixelGridDrawer.buildShader());
diff --git a/src/nostalgia/modules/core/src/studio/tilesheeteditorview.hpp b/src/nostalgia/modules/core/src/studio/tilesheeteditorview.hpp
index b0857826..4a555125 100644
--- a/src/nostalgia/modules/core/src/studio/tilesheeteditorview.hpp
+++ b/src/nostalgia/modules/core/src/studio/tilesheeteditorview.hpp
@@ -50,7 +50,7 @@ class TileSheetEditorView: public ox::SignalHandler {
 		std::size_t m_palIdx = 0;
 
 	public:
-		TileSheetEditorView(turbine::Context *ctx, ox::String path);
+		TileSheetEditorView(turbine::Context *ctx, ox::StringView path);
 
 		~TileSheetEditorView() override = default;