diff --git a/src/vs/vscode.proposed.d.ts b/src/vs/vscode.proposed.d.ts
index 66e202a0288..6c384401406 100644
--- a/src/vs/vscode.proposed.d.ts
+++ b/src/vs/vscode.proposed.d.ts
@@ -1472,10 +1472,13 @@ declare module 'vscode' {
 		// fit here, e.g:
 		// selectionHandler?: (notebook: NotebookDocument, selected: boolean) => void;
 
-		// is this kernel selected
-		readonly selected: boolean;
-		// fired when kernel is selected/unselected
-		readonly onDidChangeSelection: Event<boolean>;
+		// // is this kernel selected
+		// readonly selected: boolean;
+		// // fired when kernel is selected/unselected
+		// readonly onDidChangeSelection: Event<boolean>;
+
+		// kernels can establish IPC channels to (visible) notebook editors
+		// createNotebookCommunication(editor: vscode.NotebookEditor): vscode.NotebookCommunication;
 
 		// UI properties (get/set)
 		label: string;
@@ -1490,9 +1493,6 @@ declare module 'vscode' {
 		// optional kernel interrupt command
 		interruptHandler?: (notebook: NotebookDocument) => void
 
-		// kernels can establish IPC channels to (visible) notebook editors
-		// createNotebookCommunication(editor: vscode.NotebookEditor): vscode.NotebookCommunication;
-
 		// remove kernel
 		dispose(): void;
 	}
diff --git a/src/vs/workbench/api/common/extHostNotebookKernels.ts b/src/vs/workbench/api/common/extHostNotebookKernels.ts
index 2230f04dbeb..edf4d151d72 100644
--- a/src/vs/workbench/api/common/extHostNotebookKernels.ts
+++ b/src/vs/workbench/api/common/extHostNotebookKernels.ts
@@ -72,8 +72,8 @@ export class ExtHostNotebookKernels implements ExtHostNotebookKernelsShape {
 		return {
 			get id() { return data.id; },
 			get selector() { return data.selector; },
-			get selected() { return that._kernelData.get(handle)?.selected ?? false; },
-			onDidChangeSelection: emitter.event,
+			// get selected() { return that._kernelData.get(handle)?.selected ?? false; },
+			// onDidChangeSelection: emitter.event,
 			get label() {
 				return data.label;
 			},