diff --git a/src/panels/lovelace/common/generate-lovelace-config.ts b/src/panels/lovelace/common/generate-lovelace-config.ts
index 07b99cb22d..661334392d 100644
--- a/src/panels/lovelace/common/generate-lovelace-config.ts
+++ b/src/panels/lovelace/common/generate-lovelace-config.ts
@@ -59,7 +59,7 @@ const splitByAreaDevice = (
   for (const entity of Object.values(entityEntries)) {
     const areaId =
       entity.area_id ||
-      (entity.device_id && deviceEntries[entity.device_id].area_id);
+      (entity.device_id && deviceEntries[entity.device_id]?.area_id);
     if (areaId && areaId in areaEntries && entity.entity_id in allEntities) {
       if (!(areaId in areasWithEntities)) {
         areasWithEntities[areaId] = [];