diff --git a/AMWD.Common.AspNetCore/Attributes/BasicAuthenticationAttribute.cs b/AMWD.Common.AspNetCore/Attributes/BasicAuthenticationAttribute.cs
index d3d08ae..603d40e 100644
--- a/AMWD.Common.AspNetCore/Attributes/BasicAuthenticationAttribute.cs
+++ b/AMWD.Common.AspNetCore/Attributes/BasicAuthenticationAttribute.cs
@@ -73,9 +73,16 @@ namespace Microsoft.AspNetCore.Authorization
 
 		private void SetAuthenticateRequest(AuthorizationFilterContext context)
 		{
+			var validator = context.HttpContext.RequestServices.GetService<IBasicAuthenticationValidator>();
+			string realm = string.IsNullOrWhiteSpace(Realm)
+				? string.IsNullOrWhiteSpace(validator?.Realm)
+					? null
+					: validator.Realm
+				: Realm;
+
 			context.HttpContext.Response.Headers["WWW-Authenticate"] = "Basic";
-			if (!string.IsNullOrWhiteSpace(Realm))
-				context.HttpContext.Response.Headers["WWW-Authenticate"] += $" realm=\"{Realm.Replace("\"", "")}\"";
+			if (!string.IsNullOrWhiteSpace(realm))
+				context.HttpContext.Response.Headers["WWW-Authenticate"] += $" realm=\"{realm.Trim().Replace("\"", "")}\"";
 
 			context.HttpContext.Response.StatusCode = StatusCodes.Status401Unauthorized;
 			context.Result = new StatusCodeResult(StatusCodes.Status401Unauthorized);
diff --git a/AMWD.Common.AspNetCore/BasicAuthentication/IBasicAuthenticationValidator.cs b/AMWD.Common.AspNetCore/BasicAuthentication/IBasicAuthenticationValidator.cs
index d2d865b..b335966 100644
--- a/AMWD.Common.AspNetCore/BasicAuthentication/IBasicAuthenticationValidator.cs
+++ b/AMWD.Common.AspNetCore/BasicAuthentication/IBasicAuthenticationValidator.cs
@@ -10,9 +10,9 @@ namespace AMWD.Common.AspNetCore.BasicAuthentication
 	public interface IBasicAuthenticationValidator
 	{
 		/// <summary>
-		/// Gets or sets the realm to use when requesting authentication.
+		/// Gets the realm to use when requesting authentication.
 		/// </summary>
-		string Realm { get; set; }
+		string Realm { get; }
 
 		/// <summary>
 		/// Validates a username and password for Basic Authentication.