diff --git a/controls/radsyntaxeditor/features/layers.md b/controls/radsyntaxeditor/features/layers.md
index 7337aa6884..0a1eaab296 100644
--- a/controls/radsyntaxeditor/features/layers.md
+++ b/controls/radsyntaxeditor/features/layers.md
@@ -42,7 +42,7 @@ We will now create a custom layer which will be responsible for highlighting any
         {
         }
 
-		protected override FrameworkElement GetLinePartUIElement(ClassificationTag tag, Span span, UIUpdateContext updateContext)
+		protected override FrameworkElement GetLinePartUIElement(ClassificationTag tag, Telerik.Windows.SyntaxEditor.Core.Text.Span span, UIUpdateContext updateContext)
         {
 			if (tag.ClassificationType != ClassificationTypes.Keyword)
 			{
@@ -118,4 +118,4 @@ Now, when users mouse over any of the keywords, they will be highlighted with a
 ## See Also
 
 * [Taggers]({%slug radsyntaxeditor-features-taggers%})
-* [Selection]({%slug radsyntaxeditor-features-selection%})
\ No newline at end of file
+* [Selection]({%slug radsyntaxeditor-features-selection%})