diff --git a/script/hassfest/translations.py b/script/hassfest/translations.py
index 2965ccb7406..2fb70b6e0be 100644
--- a/script/hassfest/translations.py
+++ b/script/hassfest/translations.py
@@ -172,6 +172,9 @@ def gen_data_entry_schema(
                 vol.Optional("sections"): {
                     str: {
                         vol.Optional("data"): {str: translation_value_validator},
+                        vol.Optional("data_description"): {
+                            str: translation_value_validator
+                        },
                         vol.Optional("description"): translation_value_validator,
                         vol.Optional("name"): translation_value_validator,
                     },