diff --git a/library/include/mobilisis/configuration.h b/library/include/mobilisis/configuration.h
index 610ac58..a990dfb 100644
--- a/library/include/mobilisis/configuration.h
+++ b/library/include/mobilisis/configuration.h
@@ -38,6 +38,7 @@ class Configuration
 public:
     using SpecialDaysType = std::multimap<int, ATBSpecialDays>;
     using SpecialDaysWorktimeType = std::multimap<int, ATBSpecialDaysWorktime>;
+    using TimeRangeType = std::multimap<int, ATBTimeRange>;
 
     ATBProject project;
     ATBCurrency Currency;
@@ -53,7 +54,7 @@ public:
 	multimap<int, ATBWeekDaysWorktime> WeekDaysWorktime;
 	multimap<int, ATBPaymentOption> PaymentOption;
     multimap<int, ATBDailyTicket> DailyTicket;
-    multimap<int, ATBTimeRange> TimeRange;
+    TimeRangeType TimeRange;
     multimap<int, ATBTimeStepConfig> TimeStepConfig;
     multimap<int, ATBTimeBase> TimeBase;
     multimap<int, ATBCustomer> Customer;