diff --git a/src/nostalgia/studio/lib/json_read.hpp b/src/nostalgia/studio/lib/json_read.hpp
index 5208e5ea..94f23e6c 100644
--- a/src/nostalgia/studio/lib/json_read.hpp
+++ b/src/nostalgia/studio/lib/json_read.hpp
@@ -25,6 +25,8 @@ class JsonReader {
 	public:
 		JsonReader(QJsonObject &obj);
 
+		void setFields(int) {};
+
 		ox::Error op(QString fieldName, int *dest);
 
 		ox::Error op(QString fieldName, bool *dest);
diff --git a/src/nostalgia/studio/lib/json_write.hpp b/src/nostalgia/studio/lib/json_write.hpp
index c56138da..6588e2e0 100644
--- a/src/nostalgia/studio/lib/json_write.hpp
+++ b/src/nostalgia/studio/lib/json_write.hpp
@@ -25,6 +25,8 @@ class JsonWriter {
 	public:
 		JsonWriter(QJsonObject &obj);
 
+		void setFields(int) {};
+
 		ox::Error op(QString fieldName, int *src);
 
 		ox::Error op(QString fieldName, bool *src);
diff --git a/src/nostalgia/studio/mainwindow.hpp b/src/nostalgia/studio/mainwindow.hpp
index f2a9d361..1374fe03 100644
--- a/src/nostalgia/studio/mainwindow.hpp
+++ b/src/nostalgia/studio/mainwindow.hpp
@@ -27,13 +27,14 @@ namespace nostalgia {
 namespace studio {
 
 struct NostalgiaStudioState {
-	QString currentProjectPath;
+	QString projectPath;
 };
 
 template<typename T>
 int ioOp(T *io, NostalgiaStudioState *obj) {
 	ox::Error err = 0;
-	err |= io->op("current_project_path", &obj->currentProjectPath);
+	io->setFields(1);
+	err |= io->op("project_path", &obj->projectPath);
 	return err;
 }
 
@@ -45,6 +46,7 @@ struct NostalgiaStudioProfile {
 template<typename T>
 int ioOp(T *io, NostalgiaStudioProfile *obj) {
 	ox::Error err = 0;
+	io->setFields(1);
 	err |= io->op("app_name", &obj->appName);
 	return err;
 }