diff --git a/examples/tutorial/detailed_workflow.ipynb b/examples/tutorial/detailed_workflow.ipynb
index f96e2a52c..3d73c37f5 100644
--- a/examples/tutorial/detailed_workflow.ipynb
+++ b/examples/tutorial/detailed_workflow.ipynb
@@ -967,10 +967,10 @@
     "###################################\n",
     "port_analysis_config = {\n",
     "    \"executor\": {\n",
-    "            \"time_per_step\"\n",
     "        \"class\": \"SimulatorExecutor\",\n",
     "        \"module_path\": \"qlib.backtest.executor\",\n",
-    "        \"kwargs\": {: \"day\",\n",
+    "        \"kwargs\": {\n",
+    "            \"time_per_step\": \"day\",\n",
     "            \"generate_portfolio_metrics\": True,\n",
     "        },\n",
     "    },\n",