diff --git a/Octokit/Models/Request/SearchIssuesRequest.cs b/Octokit/Models/Request/SearchIssuesRequest.cs
index 316f71b8..12858eea 100644
--- a/Octokit/Models/Request/SearchIssuesRequest.cs
+++ b/Octokit/Models/Request/SearchIssuesRequest.cs
@@ -6,7 +6,6 @@ using System.Collections.Generic;
 using System.Linq;
 using System.Globalization;
 using System.Diagnostics.CodeAnalysis;
-using System.Text.RegularExpressions;
 
 namespace Octokit
 {