diff --git a/src/EcsPipeline.Builder.cs b/src/EcsPipeline.Builder.cs
index 22457e7..5f658df 100644
--- a/src/EcsPipeline.Builder.cs
+++ b/src/EcsPipeline.Builder.cs
@@ -48,32 +48,32 @@ namespace DCFApixels.DragonECS
             #region InitInjector
             public readonly struct InitInjector
             {
+                private readonly Builder _pipelineBuilder;
                 public readonly Injector.Builder Instance;
-                public readonly Builder PipelineBuilder;
                 public InitInjector(Injector.Builder instance, Builder pipelineBuilder)
                 {
                     Instance = instance;
-                    PipelineBuilder = pipelineBuilder;
+                    _pipelineBuilder = pipelineBuilder;
                 }
                 public Builder AddNode<T>()
                 {
                     Instance.AddNode<T>();
-                    return PipelineBuilder;
+                    return _pipelineBuilder;
                 }
                 public Builder Inject<T>(T obj)
                 {
                     Instance.Inject(obj);
-                    return PipelineBuilder;
+                    return _pipelineBuilder;
                 }
                 public Builder Extract<T>(ref T obj)
                 {
                     Instance.Extract(ref obj);
-                    return PipelineBuilder;
+                    return _pipelineBuilder;
                 }
                 public Builder Add(Injector.Builder other)
                 {
                     Instance.Add(other);
-                    return PipelineBuilder;
+                    return _pipelineBuilder;
                 }
                 public Injector Build(EcsPipeline pipeline)
                 {