diff --git a/src/Microsoft.AspNetCore.Razor/Compilation/TagHelpers/TagHelperDescriptorComparer.cs b/src/Microsoft.AspNetCore.Razor/Compilation/TagHelpers/TagHelperDescriptorComparer.cs
index 3bf1250a76..5bc2238387 100644
--- a/src/Microsoft.AspNetCore.Razor/Compilation/TagHelpers/TagHelperDescriptorComparer.cs
+++ b/src/Microsoft.AspNetCore.Razor/Compilation/TagHelpers/TagHelperDescriptorComparer.cs
@@ -2,7 +2,6 @@
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
 using System;
-using System.Collections;
 using System.Collections.Generic;
 using System.Linq;
 using Microsoft.Extensions.Internal;