diff --git a/docs/gen-qa-openai.ipynb b/docs/gen-qa-openai.ipynb
index ee5b6922..9f0dc10f 100644
--- a/docs/gen-qa-openai.ipynb
+++ b/docs/gen-qa-openai.ipynb
@@ -434,7 +434,7 @@
     "        query=query,\n",
     "        documents=results,\n",
     "        rank_fields=[\"summary\"],\n",
-    "        top_n=10,\n",
+    "        top_n=top_n,\n",
     "        return_documents=True,\n",
     "        parameters={\"truncate\": \"END\"},\n",
     "    )\n",