diff --git a/src/Elastic.Clients.Elasticsearch/_Shared/Api/BulkRequest.cs b/src/Elastic.Clients.Elasticsearch/_Shared/Api/BulkRequest.cs
index a1ee2f0bfb8..ab8e5128a0b 100644
--- a/src/Elastic.Clients.Elasticsearch/_Shared/Api/BulkRequest.cs
+++ b/src/Elastic.Clients.Elasticsearch/_Shared/Api/BulkRequest.cs
@@ -27,7 +27,11 @@ public partial class BulkRequest : IStreamSerializable
 
 	internal Request Self => this;
 
-	public override IRequestConfiguration RequestConfiguration => RequestConfigSingleton;
+	public override IRequestConfiguration? RequestConfiguration
+	{
+		get => field ?? RequestConfigSingleton;
+		set;
+	}
 
 	public BulkOperationsCollection? Operations { get; set; }