diff --git a/mopidy_ytmusic/__init__.py b/mopidy_ytmusic/__init__.py
index c9ca69e..75b7e2a 100644
--- a/mopidy_ytmusic/__init__.py
+++ b/mopidy_ytmusic/__init__.py
@@ -20,7 +20,7 @@ def get_default_config(self):
 
     def get_config_schema(self):
         schema = super().get_config_schema()
-        schema["auth_json"] = config.String(optional=True)
+        schema["auth_json"] = config.Path(optional=True)
         schema["auto_playlist_refresh"] = config.Integer(
             minimum=0, optional=True
         )