diff --git a/examples/azure/chat.ipynb b/examples/azure/chat.ipynb
index 7fd9b73..d239e2e 100644
--- a/examples/azure/chat.ipynb
+++ b/examples/azure/chat.ipynb
@@ -115,7 +115,6 @@
     "\n",
     "if use_azure_active_directory:\n",
     "    endpoint = os.environ[\"AZURE_OPENAI_ENDPOINT\"]\n",
-    "    api_key = os.environ[\"AZURE_OPENAI_API_KEY\"]\n",
     "\n",
     "    client = openai.AzureOpenAI(\n",
     "        azure_endpoint=endpoint,\n",