diff --git a/src/application/services/kyc_personal_data.py b/src/application/services/kyc_personal_data.py
index 6c86e25..e4a25ae 100644
--- a/src/application/services/kyc_personal_data.py
+++ b/src/application/services/kyc_personal_data.py
@@ -136,6 +136,9 @@ def _norm_text(*candidates: Any) -> str:
         if s:
             return s
     return ''
+
+
+def ensure_adult(birth_date: date) -> None:
     today = date.today()
     try:
         adult_from = date(today.year - 18,today.month,today.day)