diff --git a/docs/tutorials/13_trotterQRTE.ipynb b/docs/tutorials/13_trotterQRTE.ipynb
index 738e46e5..9ac01562 100644
--- a/docs/tutorials/13_trotterQRTE.ipynb
+++ b/docs/tutorials/13_trotterQRTE.ipynb
@@ -826,7 +826,7 @@
    ],
    "source": [
     "fourth_order_formula = SuzukiTrotter(order=4)\n",
-    "trotter_step_fourth_order = PauliEvolutionGate(H, dt, synthesis=second_order_formula)\n",
+    "trotter_step_fourth_order = PauliEvolutionGate(H, dt, synthesis=fourth_order_formula)\n",
     "circuit = QuantumCircuit(H.num_qubits)\n",
     "circuit.append(trotter_step_fourth_order, range(H.num_qubits))\n",
     "circuit = circuit.decompose(reps=2)\n",
@@ -1056,7 +1056,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.11.2"
+   "version": "3.11.3"
   }
  },
  "nbformat": 4,