diff --git a/homeassistant/components/backup/const.py b/homeassistant/components/backup/const.py
index 9573d522b56..3909f423d41 100644
--- a/homeassistant/components/backup/const.py
+++ b/homeassistant/components/backup/const.py
@@ -13,4 +13,5 @@ EXCLUDE_FROM_BACKUP = [
     "*.log",
     "backups/*.tar",
     "OZW_Log.txt",
+    "tts/*",
 ]