diff --git a/src/olympic/keel/src/pack-applib.cpp b/src/olympic/keel/src/pack-applib.cpp
index 5ca13c88..a486f890 100644
--- a/src/olympic/keel/src/pack-applib.cpp
+++ b/src/olympic/keel/src/pack-applib.cpp
@@ -76,8 +76,8 @@ static ox::Error pack(
 	oxReturnError(appendBinary(romBuff, dstBuff, *pl));
 	oxOutf("Final ROM buff size: {} bytes\n", romBuff.size());
 	oxReturnError(writeFileBuff(argRomBin, romBuff));
-	oxRequire(manifestJson, ox::writeOC(manifest));
-	oxReturnError(writeFileBuff(argManifest, manifestJson));
+	oxRequire(manifestJson, ox::writeOC<ox::String>(manifest));
+	oxReturnError(writeFileBuff(argManifest, {manifestJson.data(), manifestJson.len()}));
 	return {};
 }
 
diff --git a/src/olympic/studio/modlib/include/studio/project.hpp b/src/olympic/studio/modlib/include/studio/project.hpp
index 223fc099..d363c0bc 100644
--- a/src/olympic/studio/modlib/include/studio/project.hpp
+++ b/src/olympic/studio/modlib/include/studio/project.hpp
@@ -107,7 +107,7 @@ class Project {
 
 		void indexFile(ox::CRStringView path) noexcept;
 
-		ox::Error writeBuff(ox::CRStringView path, ox::Buffer const&buff) noexcept;
+		ox::Error writeBuff(ox::CRStringView path, ox::BufferView const&buff) noexcept;
 
 		ox::Result<ox::Buffer> loadBuff(ox::CRStringView path) const noexcept;
 
diff --git a/src/olympic/studio/modlib/src/project.cpp b/src/olympic/studio/modlib/src/project.cpp
index 9b9843a8..9e0e06e5 100644
--- a/src/olympic/studio/modlib/src/project.cpp
+++ b/src/olympic/studio/modlib/src/project.cpp
@@ -81,12 +81,10 @@ ox::Error Project::writeTypeStore() noexcept {
 	// write all descriptors because we don't know which types T depends on
 	oxReturnError(mkdir(m_typeDescPath));
 	for (auto const &t: m_typeStore.typeList()) {
-		oxRequireM(typeOut, ox::writeClaw(*t, ox::ClawFormat::Organic));
-		// replace garbage last character with new line
-		*typeOut.back().value = '\n';
+		oxRequire(typeOut, ox::writeClaw(*t, ox::ClawFormat::Organic));
 		// write to FS
 		auto const typePath = ox::sfmt("{}/{}", m_typeDescPath, buildTypeId(*t));
-		oxReturnError(writeBuff(typePath, typeOut));
+		oxReturnError(writeBuff(typePath, {typeOut.data(), typeOut.size() - 1}));
 	}
 	return {};
 }
@@ -114,7 +112,7 @@ void Project::indexFile(ox::CRStringView path) noexcept {
 	m_fileExtFileMap[ext].emplace_back(path);
 }
 
-ox::Error Project::writeBuff(ox::CRStringView path, ox::Buffer const&buff) noexcept {
+ox::Error Project::writeBuff(ox::CRStringView path, ox::BufferView const&buff) noexcept {
 	constexpr auto HdrSz = 40;
 	ox::Buffer outBuff;
 	outBuff.reserve(buff.size() + HdrSz);