diff --git a/src/nostalgia/studio/lib/filedialog.hpp b/src/nostalgia/studio/lib/filedialog.hpp
index 3d5c6404..41410172 100644
--- a/src/nostalgia/studio/lib/filedialog.hpp
+++ b/src/nostalgia/studio/lib/filedialog.hpp
@@ -14,17 +14,10 @@ struct FDFilterItem {
 #else
 	using String = ox::Vector<char>;
 #endif
-	String name;
-	String spec;
+	String name{};
+	String spec{};
 	constexpr FDFilterItem() noexcept = default;
-	inline FDFilterItem(ox::CRStringView pName, ox::CRStringView pSpec) noexcept {
-		name.resize(pName.len() + 1);
-		memcpy(name.data(), pName.data(), pName.len());
-		name.back().value = 0;
-		spec.resize(pSpec.len() + 1);
-		memcpy(spec.data(), pSpec.data(), pSpec.len());
-		spec.back().value = 0;
-	}
+	FDFilterItem(ox::CRStringView pName, ox::CRStringView pSpec) noexcept;
 };
 
 ox::Result<ox::String> saveFile(const ox::Vector<FDFilterItem> &exts) noexcept;
diff --git a/src/nostalgia/studio/lib/filedialog_nfd.cpp b/src/nostalgia/studio/lib/filedialog_nfd.cpp
index 0e6e5673..a5d18fae 100644
--- a/src/nostalgia/studio/lib/filedialog_nfd.cpp
+++ b/src/nostalgia/studio/lib/filedialog_nfd.cpp
@@ -6,12 +6,18 @@
 
 #include <ox/std/error.hpp>
 #include <ox/std/string.hpp>
-#include <ox/std/trace.hpp>
 
 #include "filedialog.hpp"
 
 namespace nostalgia::studio {
 
+FDFilterItem::FDFilterItem(ox::CRStringView pName, ox::CRStringView pSpec) noexcept {
+	name.resize(pName.len() + 1);
+	ox_strncpy(name.data(), pName.data(), pName.len());
+	spec.resize(pSpec.len() + 1);
+	ox_strncpy(spec.data(), pSpec.data(), pSpec.len());
+}
+
 static ox::Result<ox::String> toResult(nfdresult_t r, const NFD::UniquePathN &path) noexcept {
 	switch (r) {
 		case NFD_OKAY: {
@@ -30,7 +36,7 @@ static ox::Result<ox::String> toResult(nfdresult_t r, const NFD::UniquePathN &pa
 }
 
 ox::Result<ox::String> saveFile(const ox::Vector<FDFilterItem> &filters) noexcept {
-	NFD::Guard guard;
+	const NFD::Guard guard;
 	NFD::UniquePathN path;
 	ox::Vector<nfdnfilteritem_t, 5> filterItems(filters.size());
 	for (auto i = 0u; const auto &f : filters) {
@@ -42,7 +48,7 @@ ox::Result<ox::String> saveFile(const ox::Vector<FDFilterItem> &filters) noexcep
 }
 
 ox::Result<ox::String> chooseDirectory() noexcept {
-	NFD::Guard guard;
+	const NFD::Guard guard;
 	NFD::UniquePathN path;
 	return toResult(NFD::PickFolder(path), path);
 }