diff --git a/src/Orchard/Mvc/DataAnnotations/LocalizedRangeAttribute.cs b/src/Orchard/Mvc/DataAnnotations/LocalizedRangeAttribute.cs
index 4505a82da..81a41b19b 100644
--- a/src/Orchard/Mvc/DataAnnotations/LocalizedRangeAttribute.cs
+++ b/src/Orchard/Mvc/DataAnnotations/LocalizedRangeAttribute.cs
@@ -1,5 +1,6 @@
 using System;
 using System.ComponentModel.DataAnnotations;
+using System.Globalization;
 using System.Runtime.Serialization;
 using Orchard.Localization;