diff --git a/packages/lab-extension/src/index.ts b/packages/lab-extension/src/index.ts
index 31d3dced..b8e164c8 100644
--- a/packages/lab-extension/src/index.ts
+++ b/packages/lab-extension/src/index.ts
@@ -3,8 +3,6 @@ import {
   JupyterFrontEndPlugin
 } from '@jupyterlab/application';
 
-import { hello_world } from '@e2xgrader/cells';
-
 import { ISettingRegistry } from '@jupyterlab/settingregistry';
 
 /**
@@ -20,7 +18,6 @@ const plugin: JupyterFrontEndPlugin<void> = {
     settingRegistry: ISettingRegistry | null
   ) => {
     console.log('JupyterLab extension @e2xgrader/labextension is activated!');
-    hello_world();
     if (settingRegistry) {
       settingRegistry
         .load(plugin.id)