diff --git a/ast-visual-studio-extension/CxExtension/Panels/ResultsTreePanel.cs b/ast-visual-studio-extension/CxExtension/Panels/ResultsTreePanel.cs
index 00a2366..dff8d05 100644
--- a/ast-visual-studio-extension/CxExtension/Panels/ResultsTreePanel.cs
+++ b/ast-visual-studio-extension/CxExtension/Panels/ResultsTreePanel.cs
@@ -122,6 +122,12 @@ private TreeViewItem BuildTree()
         // Convert AST results to tree view item
         private List<TreeViewItem> ConvertResultsToTreeViewItem(Results results)
         {
+
+            // Check if results or results.results is null and return an empty list if so
+            if (results?.results == null)
+            {
+                return new List<TreeViewItem>();
+            }
             List<Result> allResults = results.results;
             List<TreeViewItem> transformedResults = new List<TreeViewItem>(allResults.Count);