diff --git a/tiramisu_json_api/api.py b/tiramisu_json_api/api.py
index a77ea15..0cc4876 100644
--- a/tiramisu_json_api/api.py
+++ b/tiramisu_json_api/api.py
@@ -113,9 +113,10 @@ class TiramisuOptionOption:
 class TiramisuOptionProperty:
     # config.option(path).property
     def __init__(self,
-                 self.config,
+                 config,
                  path: str,
                  model: Dict) -> None:
+        self.config = config
         self.path = path
         self.model = model