diff --git a/src/Libraries/NRefactory/Project/Src/Visitors/AbstractAstTransformer.cs b/src/Libraries/NRefactory/Project/Src/Visitors/AbstractAstTransformer.cs
index 5a0eced47d..586181b8c7 100644
--- a/src/Libraries/NRefactory/Project/Src/Visitors/AbstractAstTransformer.cs
+++ b/src/Libraries/NRefactory/Project/Src/Visitors/AbstractAstTransformer.cs
@@ -26,7 +26,7 @@ namespace ICSharpCode.NRefactory.Visitors {
 	/// </summary>
 	public abstract class AbstractAstTransformer : IAstVisitor {
 		
-		private Stack<INode> nodeStack = new Stack<INode>();
+		protected Stack<INode> nodeStack = new Stack<INode>();
 		
 		public void ReplaceCurrentNode(INode newNode) {
 			nodeStack.Pop();