diff --git a/src/NzbDrone.Core/Indexers/Torznab/TorznabSettings.cs b/src/NzbDrone.Core/Indexers/Torznab/TorznabSettings.cs
index f386df858..eb11a079c 100644
--- a/src/NzbDrone.Core/Indexers/Torznab/TorznabSettings.cs
+++ b/src/NzbDrone.Core/Indexers/Torznab/TorznabSettings.cs
@@ -1,3 +1,4 @@
+using System;
 using System.Linq;
 using System.Text.RegularExpressions;
 using FluentValidation;