diff --git a/src/Microsoft.DotNet.Wpf/src/System.Xaml/System/Xaml/Primitives/WriterDelegate.cs b/src/Microsoft.DotNet.Wpf/src/System.Xaml/System/Xaml/Primitives/WriterDelegate.cs
index 3425ec6640a..9c4f091cc57 100644
--- a/src/Microsoft.DotNet.Wpf/src/System.Xaml/System/Xaml/Primitives/WriterDelegate.cs
+++ b/src/Microsoft.DotNet.Wpf/src/System.Xaml/System/Xaml/Primitives/WriterDelegate.cs
@@ -72,10 +72,11 @@ protected override void Dispose(bool disposing)
                 if (disposing && !IsDisposed)
                 {
                     _addDelegate(XamlNodeType.None, XamlNode.InternalNodeType.EndOfStream);
-                    _addDelegate = new XamlNodeAddDelegate(ThrowBecauseWriterIsClosed);
-                    _addLineInfoDelegate = (_addLineInfoDelegate != null)
-                                ? new XamlLineInfoAddDelegate(ThrowBecauseWriterIsClosed2)
-                                : null;
+                    _addDelegate = delegate { throw new XamlException(SR.Get(SRID.WriterIsClosed)); };
+                    if (_addLineInfoDelegate != null)
+                    {
+                        _addLineInfoDelegate = delegate { throw new XamlException(SR.Get(SRID.WriterIsClosed)); };
+                    }
                 }
             }
             finally
@@ -111,17 +112,6 @@ public bool ShouldProvideLineInfo
         }
         #endregion
 
-
-        private void ThrowBecauseWriterIsClosed(XamlNodeType nodeType, object data)
-        {
-            throw new XamlException(SR.Get(SRID.WriterIsClosed));
-        }
-
-        private void ThrowBecauseWriterIsClosed2(int lineNumber, int linePosition)
-        {
-            throw new XamlException(SR.Get(SRID.WriterIsClosed));
-        }
-
         private void ThrowIsDisposed()
         {
             if (IsDisposed)