diff --git a/library/include/mobilisis/tariff_business_hours.h b/library/include/mobilisis/tariff_business_hours.h
index 357404e..df3f047 100644
--- a/library/include/mobilisis/tariff_business_hours.h
+++ b/library/include/mobilisis/tariff_business_hours.h
@@ -24,6 +24,7 @@
 #define _ONLY_OPEN_FOR_BUSINESS_DAYS_       (uint64_t)(1ULL << 16)    /* verkaufsoffen */
 #define _WITH_RESTRICTED_HOURS_             (uint64_t)(1ULL << 17)
 #define _ALL_DAYS_WITH_RESTRICTED_HOURS_    ((_WITH_RESTRICTED_HOURS_|_ALL_DAYS_))
+#define _WEEKEND_WITH_RESTRICTED_HOURS_     ((_WITH_RESTRICTED_HOURS_|_FRI_|_SAT_|_SUN_))
 #define _NOT_DEFINED_                       (uint64_t)(~0ULL)
 
 enum BusinessHours : std::uint64_t
@@ -57,6 +58,7 @@ enum BusinessHours : std::uint64_t
     ONLY_WEEKEND = _ONLY_WEEKEND_,
     ONLY_OPEN_FOR_BUSINESS_DAYS = _ONLY_OPEN_FOR_BUSINESS_DAYS_,
     ALL_DAYS_WITH_RESTRICTED_HOURS = _ALL_DAYS_WITH_RESTRICTED_HOURS_,
+    WEEKEND_WITH_RESTRICTED_HOURS = _WEEKEND_WITH_RESTRICTED_HOURS_,
     NOT_DEFINED = _NOT_DEFINED_
 };