diff --git a/sample/src/Demo.Api/Extensions/WebApplicationExtensions.cs b/sample/src/Demo.Api/Extensions/WebApplicationExtensions.cs
index e31c47b..6096c48 100644
--- a/sample/src/Demo.Api/Extensions/WebApplicationExtensions.cs
+++ b/sample/src/Demo.Api/Extensions/WebApplicationExtensions.cs
@@ -3,13 +3,15 @@ namespace Demo.Api.Extensions;
 
 public static class WebApplicationExtensions
 {
+    private static readonly string[] PatchHttpMethods = { "patch" };
+
     public static RouteHandlerBuilder MapPatch(
         this WebApplication app,
         string pattern,
         Delegate handler)
         => app.MapMethods(
             pattern,
-            new[] { "patch" },
+            PatchHttpMethods,
             handler);
 
     public static IApplicationBuilder AddGlobalErrorHandler(