diff --git a/src/Blazor.Diagrams/Extensions/JSRuntimeExtensions.cs b/src/Blazor.Diagrams/Extensions/JSRuntimeExtensions.cs
index cdd43bdba..459456863 100644
--- a/src/Blazor.Diagrams/Extensions/JSRuntimeExtensions.cs
+++ b/src/Blazor.Diagrams/Extensions/JSRuntimeExtensions.cs
@@ -1,5 +1,4 @@
 using System;
-using System.Threading;
 using System.Threading.Tasks;
 using Blazor.Diagrams.Core.Geometry;
 using Microsoft.AspNetCore.Components;