diff --git a/source/option.py b/source/option.py
index 9d97aac..7069c7b 100644
--- a/source/option.py
+++ b/source/option.py
@@ -1,4 +1,14 @@
 import json
+import os
+
+default_option = {
+    "language": "en",
+    "format": "WBFS",
+    "disable_download": False,
+    "del_track_after_conv": False,
+    "dont_check_for_update": False,
+    "process_track": 8
+}
 
 
 def change_option(self, option, value, restart=False):
@@ -9,4 +19,6 @@ def change_option(self, option, value, restart=False):
 
 
 def load_option(self):
+    if not(os.path.exists("./option.json")):
+        with open("./option.json", "w", encoding="utf-8") as f: json.dump(default_option, f, ensure_ascii=False)
     with open("./option.json", encoding="utf-8") as f: self.option = json.load(f)
\ No newline at end of file