diff --git a/extensions/arc/notebooks/arcDeployment/deploy.arc.data.controller.ipynb b/extensions/arc/notebooks/arcDeployment/deploy.arc.data.controller.ipynb
index 6eaf9083a5..8df5826096 100644
--- a/extensions/arc/notebooks/arcDeployment/deploy.arc.data.controller.ipynb
+++ b/extensions/arc/notebooks/arcDeployment/deploy.arc.data.controller.ipynb
@@ -234,7 +234,7 @@
             "source": [
                 "# Login to the Data Controller.\n",
                 "#\n",
-                "run_command(f'azdata login -n {arc_data_controller_namespace}')"
+                "run_command(f'azdata login --namespace {arc_data_controller_namespace}')"
             ],
             "metadata": {
                 "azdata_cell_guid": "9aed0c5a-2c8a-4ad7-becb-60281923a196"