diff --git a/include/cista/hashing.h b/include/cista/hashing.h
index 58c14fa..3b60f30 100644
--- a/include/cista/hashing.h
+++ b/include/cista/hashing.h
@@ -123,7 +123,7 @@ struct hashing {
     } else if constexpr (is_strong_v<Type>) {
       return hashing<typename Type::value_t>{}(el.v_, seed);
     } else if constexpr (detail::is_optional<Type>::value) {
-      return el.has_value() ? 0U : hashing<typename Type::value_type>{}(*el);
+      return el.has_value() ? hashing<typename Type::value_type>{}(*el) : 0U;
     } else {
       static_assert(has_hash_v<Type> || std::is_scalar_v<Type> ||
                         has_std_hash_v<Type> || is_iterable_v<Type> ||