diff --git a/src/Libraries/NRefactory/Project/Src/PrettyPrinter/IOutputAstVisitor.cs b/src/Libraries/NRefactory/Project/Src/PrettyPrinter/IOutputAstVisitor.cs
index 263a4fc6fa..f68dc93a58 100644
--- a/src/Libraries/NRefactory/Project/Src/PrettyPrinter/IOutputAstVisitor.cs
+++ b/src/Libraries/NRefactory/Project/Src/PrettyPrinter/IOutputAstVisitor.cs
@@ -47,6 +47,12 @@ namespace ICSharpCode.NRefactory.PrettyPrinter
 			get;
 			set;
 		}
+		bool LastCharacterIsNewLine {
+			get;
+		}
+		bool LastCharacterIsWhiteSpace {
+			get;
+		}
 		void NewLine();
 		void Indent();
 		void PrintComment(Comment comment, bool forceWriteInPreviousBlock);