diff --git a/src/NzbDrone.Core/Notifications/Webhook/WebhookManualInteractionPayload.cs b/src/NzbDrone.Core/Notifications/Webhook/WebhookManualInteractionPayload.cs
index 6b2cfa0cd..65a5bd88e 100644
--- a/src/NzbDrone.Core/Notifications/Webhook/WebhookManualInteractionPayload.cs
+++ b/src/NzbDrone.Core/Notifications/Webhook/WebhookManualInteractionPayload.cs
@@ -1,3 +1,5 @@
+using System.Collections.Generic;
+
 namespace NzbDrone.Core.Notifications.Webhook
 {
     public class WebhookManualInteractionPayload : WebhookPayload