diff --git a/custom_components/span_panel/config_flow.py b/custom_components/span_panel/config_flow.py
index 1946e5e..0dd30c1 100644
--- a/custom_components/span_panel/config_flow.py
+++ b/custom_components/span_panel/config_flow.py
@@ -240,7 +240,7 @@ async def async_step_hassio(self, discovery_info: HassioServiceInfo) -> ConfigFl
             **self.context,
             "title_placeholders": {
                 **self.context.get("title_placeholders", {}),
-                CONF_HOST: f"{host}:{port}",
+                CONF_HOST: panel_serial,
             },
         }
         self._is_flow_setup = True