diff --git a/src/olympic/keel/src/pack.cpp b/src/olympic/keel/src/pack.cpp
index 68dabdcd..2f27e31f 100644
--- a/src/olympic/keel/src/pack.cpp
+++ b/src/olympic/keel/src/pack.cpp
@@ -14,15 +14,15 @@ namespace keel {
 static ox::Error pathToInode(
 		keel::Context &ctx, ox::FileSystem &dest, ox::ModelObject &obj) noexcept {
 	auto &o = obj;
-	auto type = static_cast<ox::FileAddressType>(o["type"].get<int8_t>());
-	auto &data = o["data"].get<ox::ModelUnion>();
+	auto type = static_cast<ox::FileAddressType>(o.at("type").unwrap()->get<int8_t>());
+	auto &data = o.at("data").unwrap()->get<ox::ModelUnion>();
 	ox::String path;
 	switch (type) {
 		case ox::FileAddressType::Path:
-			path = data["path"].get<ox::String>();
+			path = data.at("path").unwrap()->get<ox::String>();
 			break;
 		case ox::FileAddressType::ConstPath:
-			path = data["constPath"].get<ox::String>();
+			path = data.at("constPath").unwrap()->get<ox::String>();
 			break;
 		case ox::FileAddressType::Inode:
 		case ox::FileAddressType::None:
@@ -33,7 +33,7 @@ static ox::Error pathToInode(
 		oxReturnError(keel::uuidToPath(ctx, uuid).moveTo(path));
 	}
 	oxRequire(s, dest.stat(path));
-	oxReturnError(o["type"].set(static_cast<int8_t>(ox::FileAddressType::Inode)));
+	oxReturnError(o.at("type").unwrap()->set(static_cast<int8_t>(ox::FileAddressType::Inode)));
 	oxOutf("path to inode: {} => {}\n", path, s.inode);
 	return data.set(2, s.inode);
 }