diff --git a/proxy/conf.py b/proxy/conf.py
index 4c0645d..608d5c2 100644
--- a/proxy/conf.py
+++ b/proxy/conf.py
@@ -6,7 +6,7 @@
 class Settings(BaseSettings):
     model_config = SettingsConfigDict(env_prefix="PROXY_")
     OBJECT_STORE_HOST: str = "minio"
-    OBJECT_STORE_PORT: Optional[int]
+    OBJECT_STORE_PORT: Optional[int] = None
     OBJECT_STORE_SSL_ENABLED: bool = True
     SECRET: str
     LOG_LEVEL: str = "info"