diff --git a/docs/source/example_grover_subset.ipynb b/docs/source/example_grover_subset.ipynb
index 99fb9956..325e5259 100644
--- a/docs/source/example_grover_subset.ipynb
+++ b/docs/source/example_grover_subset.ipynb
@@ -20,7 +20,9 @@
     "\n",
     "\n",
     "@qlassf\n",
-    "def subset_sum(ii: Tuple[Qint[2], Qint[2]], set_: Parameter[Qlist[Qint3, 4]]) -> Qint[3]:\n",
+    "def subset_sum(\n",
+    "    ii: Tuple[Qint[2], Qint[2]], set_: Parameter[Qlist[Qint3, 4]]\n",
+    ") -> Qint[3]:\n",
     "    return set_[ii[0]] + set_[ii[1]] if ii[0] != ii[1] else 0"
    ]
   },