diff --git a/src/PowerShellEditorServices/Services/CodeLens/ReferencesCodeLensProvider.cs b/src/PowerShellEditorServices/Services/CodeLens/ReferencesCodeLensProvider.cs
index 50bac22ad..f630c7979 100644
--- a/src/PowerShellEditorServices/Services/CodeLens/ReferencesCodeLensProvider.cs
+++ b/src/PowerShellEditorServices/Services/CodeLens/ReferencesCodeLensProvider.cs
@@ -113,9 +113,18 @@ public CodeLens ResolveCodeLens(CodeLens codeLens, ScriptFile scriptFile)
                         continue;
                     }
 
+                    DocumentUri uri = DocumentUri.From(foundReference.FilePath);
+                    // For any vscode-notebook-cell, we need to ignore the backing file on disk.
+                    if (uri.Scheme == "file" &&
+                        scriptFile.DocumentUri.Scheme == "vscode-notebook-cell" &&
+                        uri.Path == scriptFile.DocumentUri.Path)
+                    {
+                        continue;
+                    }
+
                     acc.Add(new Location
                     {
-                        Uri = DocumentUri.From(foundReference.FilePath),
+                        Uri = uri,
                         Range = foundReference.ScriptRegion.ToRange()
                     });
                 }
diff --git a/src/PowerShellEditorServices/Services/TextDocument/ScriptFile.cs b/src/PowerShellEditorServices/Services/TextDocument/ScriptFile.cs
index 8a40b04e7..6f65dd629 100644
--- a/src/PowerShellEditorServices/Services/TextDocument/ScriptFile.cs
+++ b/src/PowerShellEditorServices/Services/TextDocument/ScriptFile.cs
@@ -217,8 +217,10 @@ internal static List<string> GetLinesInternal(string text)
         internal static bool IsUntitledPath(string path)
         {
             Validate.IsNotNull(nameof(path), path);
-
-            return path.ToLower().StartsWith("untitled:");
+            return string.Equals(
+                DocumentUri.From(path).Scheme,
+                Uri.UriSchemeFile,
+                StringComparison.OrdinalIgnoreCase);
         }
 
         /// <summary>
diff --git a/src/PowerShellEditorServices/Services/Workspace/WorkspaceService.cs b/src/PowerShellEditorServices/Services/Workspace/WorkspaceService.cs
index 44f8b8820..b9fa7f018 100644
--- a/src/PowerShellEditorServices/Services/Workspace/WorkspaceService.cs
+++ b/src/PowerShellEditorServices/Services/Workspace/WorkspaceService.cs
@@ -195,6 +195,7 @@ public bool TryGetFile(DocumentUri documentUri, out ScriptFile scriptFile)
                 // List supported schemes here
                 case "file":
                 case "untitled":
+                case "vscode-notebook-cell":
                     break;
 
                 default: