diff --git a/src/vs/workbench/api/common/extHostNotebook.ts b/src/vs/workbench/api/common/extHostNotebook.ts
index 6fabf83a93b..4194b793d30 100644
--- a/src/vs/workbench/api/common/extHostNotebook.ts
+++ b/src/vs/workbench/api/common/extHostNotebook.ts
@@ -807,9 +807,9 @@ export class ExtHostNotebookController implements ExtHostNotebookShape, ExtHostN
 			throw new Error(`Notebook provider for '${viewType}' already registered`);
 		}
 
-		if ((<any>provider).executeCell) {
-			throw new Error('NotebookContentKernel.executeCell is removed, please use vscode.notebook.registerNotebookKernel instead.');
-		}
+		// if ((<any>provider).executeCell) {
+		// 	throw new Error('NotebookContentKernel.executeCell is removed, please use vscode.notebook.registerNotebookKernel instead.');
+		// }
 
 		this._notebookContentProviders.set(viewType, { extension, provider });
 		this._proxy.$registerNotebookProvider({ id: extension.identifier, location: extension.extensionLocation }, viewType, provider.kernel ? { id: viewType, label: provider.kernel.label, extensionLocation: extension.extensionLocation, preloads: provider.kernel.preloads } : undefined);