diff --git a/src/modules/launcher/Plugins/Microsoft.Plugin.Folder/Sources/QueryInternalDirectory.cs b/src/modules/launcher/Plugins/Microsoft.Plugin.Folder/Sources/QueryInternalDirectory.cs
index 9e18ff3737..c4cf6fbb1d 100644
--- a/src/modules/launcher/Plugins/Microsoft.Plugin.Folder/Sources/QueryInternalDirectory.cs
+++ b/src/modules/launcher/Plugins/Microsoft.Plugin.Folder/Sources/QueryInternalDirectory.cs
@@ -3,6 +3,7 @@
 // See the LICENSE file in the project root for more information.
 
 using System;
+using System.Buffers;
 using System.Collections.Generic;
 using System.Collections.Immutable;
 using System.Globalization;
@@ -15,6 +16,7 @@ namespace Microsoft.Plugin.Folder.Sources
 {
     public class QueryInternalDirectory : IQueryInternalDirectory
     {
+        private static readonly SearchValues<char> PathChars = SearchValues.Create("\\/");
         private readonly FolderSettings _settings;
         private readonly IQueryFileSystemInfo _queryFileSystemInfo;
         private readonly IDirectory _directory;
@@ -51,7 +53,7 @@ namespace Microsoft.Plugin.Folder.Sources
             {
                 // if folder doesn't exist, we want to take the last part and use it afterwards to help the user
                 // find the right folder.
-                int index = search.LastIndexOfAny(new char[] { '\\', '/' });
+                int index = search.AsSpan().LastIndexOfAny(PathChars);
 
                 // No slashes found, so probably not a folder
                 if (index <= 0 || index >= search.Length - 1)