diff --git a/homeassistant/components/onvif/config_flow.py b/homeassistant/components/onvif/config_flow.py
index f4e3f11d0b7..34f322b9f75 100644
--- a/homeassistant/components/onvif/config_flow.py
+++ b/homeassistant/components/onvif/config_flow.py
@@ -102,7 +102,6 @@ class OnvifFlowHandler(ConfigFlow, domain=DOMAIN):
     """Handle a ONVIF config flow."""
 
     VERSION = 1
-    _reauth_entry: ConfigEntry
 
     @staticmethod
     @callback
@@ -136,30 +135,28 @@ class OnvifFlowHandler(ConfigFlow, domain=DOMAIN):
         self, entry_data: Mapping[str, Any]
     ) -> ConfigFlowResult:
         """Handle re-authentication of an existing config entry."""
-        reauth_entry = self.hass.config_entries.async_get_entry(
-            self.context["entry_id"]
-        )
-        assert reauth_entry is not None
-        self._reauth_entry = reauth_entry
         return await self.async_step_reauth_confirm()
 
     async def async_step_reauth_confirm(
         self, user_input: dict[str, Any] | None = None
     ) -> ConfigFlowResult:
         """Confirm reauth."""
-        entry = self._reauth_entry
         errors: dict[str, str] | None = {}
+        reauth_entry = self._get_reauth_entry()
         description_placeholders: dict[str, str] | None = None
         if user_input is not None:
-            entry_data = entry.data
-            self.onvif_config = entry_data | user_input
+            self.onvif_config = reauth_entry.data | user_input
             errors, description_placeholders = await self.async_setup_profiles(
                 configure_unique_id=False
             )
             if not errors:
-                return self.async_update_reload_and_abort(entry, data=self.onvif_config)
+                return self.async_update_reload_and_abort(
+                    reauth_entry, data=self.onvif_config
+                )
 
-        username = (user_input or {}).get(CONF_USERNAME) or entry.data[CONF_USERNAME]
+        username = (user_input or {}).get(CONF_USERNAME) or reauth_entry.data[
+            CONF_USERNAME
+        ]
         return self.async_show_form(
             step_id="reauth_confirm",
             data_schema=vol.Schema(