diff --git a/homeassistant/components/plugwise/config_flow.py b/homeassistant/components/plugwise/config_flow.py
index a94000934eb..09c5392f12a 100644
--- a/homeassistant/components/plugwise/config_flow.py
+++ b/homeassistant/components/plugwise/config_flow.py
@@ -59,8 +59,7 @@ def smile_user_schema(discovery_info: ZeroconfServiceInfo | None) -> vol.Schema:
         schema = schema.extend(
             {
                 vol.Required(CONF_HOST): str,
-                # Port under investigation for removal (hence not added in #132878)
-                vol.Optional(CONF_PORT, default=DEFAULT_PORT): int,
+                vol.Required(CONF_PASSWORD): str,
                 vol.Required(CONF_USERNAME, default=SMILE): vol.In(
                     {SMILE: FLOW_SMILE, STRETCH: FLOW_STRETCH}
                 ),
@@ -197,6 +196,7 @@ class PlugwiseConfigFlow(ConfigFlow, domain=DOMAIN):
         errors: dict[str, str] = {}
 
         if user_input is not None:
+            user_input[CONF_PORT] = DEFAULT_PORT
             if self.discovery_info:
                 user_input[CONF_HOST] = self.discovery_info.host
                 user_input[CONF_PORT] = self.discovery_info.port