diff --git a/homeassistant/components/forked_daapd/config_flow.py b/homeassistant/components/forked_daapd/config_flow.py
index 2440fc82943..7edf25a2595 100644
--- a/homeassistant/components/forked_daapd/config_flow.py
+++ b/homeassistant/components/forked_daapd/config_flow.py
@@ -111,7 +111,7 @@ class ForkedDaapdFlowHandler(ConfigFlow, domain=DOMAIN):
 
     def __init__(self) -> None:
         """Initialize."""
-        self.discovery_schema = None
+        self.discovery_schema: vol.Schema | None = None
 
     @staticmethod
     @callback
diff --git a/homeassistant/components/linear_garage_door/config_flow.py b/homeassistant/components/linear_garage_door/config_flow.py
index dca2780cfea..d1dda97c513 100644
--- a/homeassistant/components/linear_garage_door/config_flow.py
+++ b/homeassistant/components/linear_garage_door/config_flow.py
@@ -75,9 +75,7 @@ class LinearGarageDoorConfigFlow(ConfigFlow, domain=DOMAIN):
         self, user_input: dict[str, Any] | None = None
     ) -> ConfigFlowResult:
         """Handle the initial step."""
-        data_schema = STEP_USER_DATA_SCHEMA
-
-        data_schema = vol.Schema(data_schema)
+        data_schema = vol.Schema(STEP_USER_DATA_SCHEMA)
 
         if user_input is None:
             return self.async_show_form(step_id="user", data_schema=data_schema)
diff --git a/homeassistant/components/motion_blinds/config_flow.py b/homeassistant/components/motion_blinds/config_flow.py
index c838825a4bd..131299314a2 100644
--- a/homeassistant/components/motion_blinds/config_flow.py
+++ b/homeassistant/components/motion_blinds/config_flow.py
@@ -75,7 +75,7 @@ class MotionBlindsFlowHandler(ConfigFlow, domain=DOMAIN):
         """Initialize the Motionblinds flow."""
         self._host: str | None = None
         self._ips: list[str] = []
-        self._config_settings = None
+        self._config_settings: vol.Schema | None = None
 
     @staticmethod
     @callback
diff --git a/homeassistant/components/synology_dsm/config_flow.py b/homeassistant/components/synology_dsm/config_flow.py
index 6e2b090fc98..d019361edad 100644
--- a/homeassistant/components/synology_dsm/config_flow.py
+++ b/homeassistant/components/synology_dsm/config_flow.py
@@ -138,7 +138,7 @@ class SynologyDSMFlowHandler(ConfigFlow, domain=DOMAIN):
             user_input = {}
 
         description_placeholders = {}
-        data_schema = {}
+        data_schema = None
 
         if step_id == "link":
             user_input.update(self.discovered_conf)
diff --git a/homeassistant/components/vizio/config_flow.py b/homeassistant/components/vizio/config_flow.py
index fb5f74f4e09..d8b99595f54 100644
--- a/homeassistant/components/vizio/config_flow.py
+++ b/homeassistant/components/vizio/config_flow.py
@@ -188,7 +188,7 @@ class VizioConfigFlow(ConfigFlow, domain=DOMAIN):
 
     def __init__(self) -> None:
         """Initialize config flow."""
-        self._user_schema = None
+        self._user_schema: vol.Schema | None = None
         self._must_show_form: bool | None = None
         self._ch_type: str | None = None
         self._pairing_token: str | None = None
diff --git a/homeassistant/components/zha/config_flow.py b/homeassistant/components/zha/config_flow.py
index 037ad4192bd..9be27f7b37c 100644
--- a/homeassistant/components/zha/config_flow.py
+++ b/homeassistant/components/zha/config_flow.py
@@ -221,7 +221,7 @@ class BaseZhaFlow(ConfigEntryBaseFlow):
             return await self.async_step_verify_radio()
 
         # Pre-select the currently configured port
-        default_port = vol.UNDEFINED
+        default_port: vol.Undefined | str = vol.UNDEFINED
 
         if self._radio_mgr.device_path is not None:
             for description, port in zip(list_of_ports, ports, strict=False):
@@ -251,7 +251,7 @@ class BaseZhaFlow(ConfigEntryBaseFlow):
             return await self.async_step_manual_port_config()
 
         # Pre-select the current radio type
-        default = vol.UNDEFINED
+        default: vol.Undefined | str = vol.UNDEFINED
 
         if self._radio_mgr.radio_type is not None:
             default = self._radio_mgr.radio_type.description