diff --git a/pokemonterminal/terminal/adapters/windowsterminal.py b/pokemonterminal/terminal/adapters/windowsterminal.py
index 35a0b8c..4784ff4 100644
--- a/pokemonterminal/terminal/adapters/windowsterminal.py
+++ b/pokemonterminal/terminal/adapters/windowsterminal.py
@@ -31,7 +31,7 @@ def set_background_image(path: str):
             # write to file
             # it lost orignal indent, comment, ...
             json_file.seek(0)
-            json.dump(data, json_file, indent=4)
+            json.dump(data, json_file, indent=4, ensure_ascii=False)
             json_file.truncate()
 
     def comment_remover(text: str) -> str: