diff --git a/snips/config.json b/snips/config.json
index 16cb9be..492be12 100644
--- a/snips/config.json
+++ b/snips/config.json
@@ -41,7 +41,7 @@
     "language": "match((?:en|de|fr))",
     "custom_tts": {
       "active": "bool",
-      "platform": "string"
+      "platform": "str"
     }
   },
   "image": "homeassistant/{arch}-addon-snips"