diff --git a/docs/build/circuit-library.ipynb b/docs/build/circuit-library.ipynb
index 79f6c992e5d..6ad2a7e757b 100644
--- a/docs/build/circuit-library.ipynb
+++ b/docs/build/circuit-library.ipynb
@@ -5,7 +5,7 @@
    "id": "aea62c4c-1e42-4472-9f1d-e52783e81fc6",
    "metadata": {},
    "source": [
-    "# Circuit library"
+    "# Circuit library "
    ]
   },
   {