diff --git a/homeassistant/components/demo/strings.json b/homeassistant/components/demo/strings.json
index 286bd5d0937..cdbe8dc1bd5 100644
--- a/homeassistant/components/demo/strings.json
+++ b/homeassistant/components/demo/strings.json
@@ -51,7 +51,8 @@
           "constant": "Constant",
           "bool": "Optional boolean",
           "int": "Numeric input"
-        }
+        },
+        "submit": "Save!"
       },
       "options_2": {
         "data": {
diff --git a/script/hassfest/translations.py b/script/hassfest/translations.py
index be73692cb26..5233911111e 100644
--- a/script/hassfest/translations.py
+++ b/script/hassfest/translations.py
@@ -135,6 +135,7 @@ def gen_data_entry_schema(
                 vol.Optional("data"): {str: cv.string_with_no_html},
                 vol.Optional("data_description"): {str: cv.string_with_no_html},
                 vol.Optional("menu_options"): {str: cv.string_with_no_html},
+                vol.Optional("submit"): cv.string_with_no_html,
             }
         },
         vol.Optional("error"): {str: cv.string_with_no_html},