diff --git a/src/common/entity/compute_state_display.ts b/src/common/entity/compute_state_display.ts
index c41bde1263..998949b007 100644
--- a/src/common/entity/compute_state_display.ts
+++ b/src/common/entity/compute_state_display.ts
@@ -50,7 +50,7 @@ export const computeStateDisplay = (
   entities: HomeAssistant["entities"],
   state?: string
 ): string => {
-  const entity = entities[stateObj.entity_id] as
+  const entity = entities?.[stateObj.entity_id] as
     | EntityRegistryDisplayEntry
     | undefined;