diff --git a/src/Libraries/AvalonEdit/ICSharpCode.AvalonEdit/Rendering/VisualLineElement.cs b/src/Libraries/AvalonEdit/ICSharpCode.AvalonEdit/Rendering/VisualLineElement.cs
index 026e9c0f99..0d5585ac96 100644
--- a/src/Libraries/AvalonEdit/ICSharpCode.AvalonEdit/Rendering/VisualLineElement.cs
+++ b/src/Libraries/AvalonEdit/ICSharpCode.AvalonEdit/Rendering/VisualLineElement.cs
@@ -60,7 +60,7 @@ namespace ICSharpCode.AvalonEdit.Rendering
 		/// <see cref="VisualLineElementTextRunProperties"/> will affect only this
 		/// <see cref="VisualLineElement"/>.
 		/// </summary>
-		public VisualLineElementTextRunProperties TextRunProperties { get; set; }
+		public VisualLineElementTextRunProperties TextRunProperties { get; private set; }
 		
 		internal void SetTextRunProperties(VisualLineElementTextRunProperties p)
 		{