diff --git a/samples/quantum-signal-processing/signal-processing.ipynb b/samples/quantum-signal-processing/signal-processing.ipynb
index 14d9c052..c460bcc1 100644
--- a/samples/quantum-signal-processing/signal-processing.ipynb
+++ b/samples/quantum-signal-processing/signal-processing.ipynb
@@ -396,7 +396,7 @@
         "\n",
         "ys_simulated = simulate_polynomial(experiment_circuit, xs, num_shots)\n",
         "\n",
-        "# Plot both evaluated probabilities `ys`` and simulated ones `simulated_ys``\n",
+        "# Plot both evaluated probabilities `ys`` and simulated ones `ys_simulated``\n",
         "fig = plt.figure()\n",
         "ax = fig.add_subplot(1, 1, 1)\n",
         "ax.plot(xs, ys, label='formula')\n",
@@ -479,7 +479,7 @@
         "\n",
         "ys_simulated = simulate_polynomial(experiment_circuit, xs, num_shots)\n",
         "\n",
-        "# Plot both evaluated probabilities `ys`` and simulated ones `simulated_ys``\n",
+        "# Plot both evaluated probabilities `ys`` and simulated ones `ys_simulated``\n",
         "fig = plt.figure()\n",
         "ax = fig.add_subplot(1, 1, 1)\n",
         "ax.plot(xs, ys, label='formula')\n",