diff --git a/src/ReC.Application/Common/Behaviors/HeaderQueryBehavior.cs b/src/ReC.Application/Common/Behaviors/HeaderQueryBehavior.cs
index 2f901a9..b154301 100644
--- a/src/ReC.Application/Common/Behaviors/HeaderQueryBehavior.cs
+++ b/src/ReC.Application/Common/Behaviors/HeaderQueryBehavior.cs
@@ -7,10 +7,11 @@ using System.Text.Json;
 
 namespace ReC.Application.Common.Behaviors;
 
-public class HeaderQueryBehavior<TRecAction>(IRecDbContext dbContext, ILogger<HeaderQueryBehavior<TRecAction>>? logger = null) : IPipelineBehavior<TRecAction, Unit>
-    where TRecAction : RecActionDto
+public class HeaderQueryBehavior<TRequest, TResponse>(IRecDbContext dbContext, ILogger<HeaderQueryBehavior<TRequest, TResponse>>? logger = null) : IPipelineBehavior<TRequest, TResponse>
+    where TRequest : RecActionDto
+    where TResponse : notnull
 {
-    public async Task<Unit> Handle(TRecAction action, RequestHandlerDelegate<Unit> next, CancellationToken cancel)
+    public async Task<TResponse> Handle(TRequest action, RequestHandlerDelegate<TResponse> next, CancellationToken cancel)
     {
         if (action.HeaderQuery is null)
             return await next(cancel);