diff --git a/homeassistant/components/backup/manager.py b/homeassistant/components/backup/manager.py
index 72e625859fe..3b3cb618a54 100644
--- a/homeassistant/components/backup/manager.py
+++ b/homeassistant/components/backup/manager.py
@@ -320,7 +320,7 @@ class BackupManager:
                     protected=result.protected,
                     size=result.size,
                 )
-                backup.agent_ids.append(agent_ids[idx])
+            backup.agent_ids.append(agent_ids[idx])
 
         return (backup, agent_errors)
 
diff --git a/tests/components/backup/snapshots/test_websocket.ambr b/tests/components/backup/snapshots/test_websocket.ambr
index 09ae86bda25..7388ee81884 100644
--- a/tests/components/backup/snapshots/test_websocket.ambr
+++ b/tests/components/backup/snapshots/test_websocket.ambr
@@ -884,6 +884,7 @@
       'backup': dict({
         'agent_ids': list([
           'test.remote',
+          'backup.local',
         ]),
         'backup_id': 'abc123',
         'date': '1970-01-01T00:00:00.000Z',