diff --git a/custom_components/zidoo/config_flow.py b/custom_components/zidoo/config_flow.py
index 822e1e8..f5a0821 100644
--- a/custom_components/zidoo/config_flow.py
+++ b/custom_components/zidoo/config_flow.py
@@ -91,7 +91,7 @@ async def async_step_user(self, user_input=None):
                 errors["base"] = "unknown"
 
             if "base" not in errors:
-                unique_id = str(f"{DOMAIN}-{validated('mac')}")
+                unique_id = str(f"{DOMAIN}-{validated['mac']}")
                 await self.async_set_unique_id(unique_id)
                 self._abort_if_unique_id_configured()