diff --git a/EnvelopeGenerator.Web/Handler/HistoryHandler.cs b/EnvelopeGenerator.Web/Handler/HistoryHandler.cs
index a291af11..281aa920 100644
--- a/EnvelopeGenerator.Web/Handler/HistoryHandler.cs
+++ b/EnvelopeGenerator.Web/Handler/HistoryHandler.cs
@@ -1,6 +1,7 @@
 using EnvelopeGenerator.Common;
 using EnvelopeGenerator.Web.Services;
 using Microsoft.Extensions.Primitives;
+using NLog;
 
 namespace EnvelopeGenerator.Web.Handler
 {