diff --git a/homeassistant/components/esphome/config_flow.py b/homeassistant/components/esphome/config_flow.py
index 66be57d1390..a9284129c52 100644
--- a/homeassistant/components/esphome/config_flow.py
+++ b/homeassistant/components/esphome/config_flow.py
@@ -535,7 +535,7 @@ class EsphomeFlowHandler(ConfigFlow, domain=DOMAIN):
                 self._reconfig_entry,
                 data=self._reconfig_entry.data | self._async_make_config_data(),
             )
-        if self._reconfig_entry.data[CONF_DEVICE_NAME] == self._device_name:
+        if self._reconfig_entry.data.get(CONF_DEVICE_NAME) == self._device_name:
             self._entry_with_name_conflict = self._reconfig_entry
             return await self.async_step_name_conflict()
         return self.async_abort(