diff --git a/src/Server/ZB.MOM.WW.OtOpcUa.Security/ServiceCollectionExtensions.cs b/src/Server/ZB.MOM.WW.OtOpcUa.Security/ServiceCollectionExtensions.cs
index 864307a2..2f8cf04f 100644
--- a/src/Server/ZB.MOM.WW.OtOpcUa.Security/ServiceCollectionExtensions.cs
+++ b/src/Server/ZB.MOM.WW.OtOpcUa.Security/ServiceCollectionExtensions.cs
@@ -1,4 +1,5 @@
 using Microsoft.AspNetCore.Authentication.Cookies;
+using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.DataProtection;
 using Microsoft.AspNetCore.Http;
 using Microsoft.Extensions.Configuration;
@@ -78,7 +79,7 @@ public static class ServiceCollectionExtensions
 
         services.AddAuthorization(o =>
         {
-            o.FallbackPolicy = new Microsoft.AspNetCore.Authorization.AuthorizationPolicyBuilder(
+            o.FallbackPolicy = new AuthorizationPolicyBuilder(
                     CookieAuthenticationDefaults.AuthenticationScheme)
                 .RequireAuthenticatedUser()
                 .Build();