diff --git a/src/nostalgia/studio/lib/json_read.hpp b/src/nostalgia/studio/lib/json_read.hpp
index 449b0acf..36b285a4 100644
--- a/src/nostalgia/studio/lib/json_read.hpp
+++ b/src/nostalgia/studio/lib/json_read.hpp
@@ -91,7 +91,7 @@ ox::Error JsonReader::field(QJsonValueRef src, T *dest) {
 }
 
 template<typename T>
-int readJson(QString json, T *dest) {
+Error readJson(QString json, T *dest) {
 	auto obj = QJsonDocument::fromJson(json.toUtf8()).object();
 	JsonReader rdr(obj);
 	return model(&rdr, dest);
diff --git a/src/nostalgia/studio/lib/json_test.cpp b/src/nostalgia/studio/lib/json_test.cpp
index ca62290d..e0b46fc0 100644
--- a/src/nostalgia/studio/lib/json_test.cpp
+++ b/src/nostalgia/studio/lib/json_test.cpp
@@ -21,7 +21,7 @@ struct TestStructNest {
 };
 
 template<typename T>
-int model(T *io, TestStructNest *obj) {
+Error model(T *io, TestStructNest *obj) {
 	Error err = 0;
 	err |= io->setTypeInfo("TestStructNest", 4);
 	err |= io->field("Bool", &obj->Bool);
@@ -40,7 +40,7 @@ struct TestStruct {
 };
 
 template<typename T>
-int model(T *io, TestStruct *obj) {
+Error model(T *io, TestStruct *obj) {
 	Error err = 0;
 	err |= io->setTypeInfo("TestStruct", 5);
 	err |= io->field("Bool", &obj->Bool);
diff --git a/src/nostalgia/studio/lib/json_write.hpp b/src/nostalgia/studio/lib/json_write.hpp
index e5174d78..ff1a3943 100644
--- a/src/nostalgia/studio/lib/json_write.hpp
+++ b/src/nostalgia/studio/lib/json_write.hpp
@@ -66,7 +66,7 @@ ox::Error JsonWriter::field(QString fieldName, QVector<T> *src) {
 };
 
 template<typename T>
-int writeJson(QString *json, T *src) {
+Error writeJson(QString *json, T *src) {
 	auto obj = QJsonObject();
 	JsonWriter rdr(obj);
 	auto err = model(&rdr, src);