diff --git a/lessons/3-NeuralNetworks/03-Perceptron/Perceptron.ipynb b/lessons/3-NeuralNetworks/03-Perceptron/Perceptron.ipynb
index 6e2d188a..4019deeb 100644
--- a/lessons/3-NeuralNetworks/03-Perceptron/Perceptron.ipynb
+++ b/lessons/3-NeuralNetworks/03-Perceptron/Perceptron.ipynb
@@ -470,8 +470,8 @@
     "    \n",
     "    ax1.set_xlim(-6, 6)\n",
     "    ax1.set_ylim(-6, 6)\n",
-    "    ax1.plot(pos_examples[:, 0], pos_examples[:, 1], 'bo', label='Positive', s=100, alpha=0.6)\n",
-    "    ax1.plot(neg_examples[:, 0], neg_examples[:, 1], 'ro', label='Negative', s=100, alpha=0.6)\n",
+    "    ax1.scatter(pos_examples[:, 0], pos_examples[:, 1], color='blue', marker='o', s=100, alpha=0.6, label='Positive')\n",
+    "    ax1.scatter(neg_examples[:, 0], neg_examples[:, 1], color='red', marker='o', s=100, alpha=0.6, label='Negative')\n",
     "    ax1.plot(x, y, 'g-', linewidth=3, label='Decision Boundary')\n",
     "    ax1.set_title(f'Decision Boundary (lr={learning_rate})', fontsize=14)\n",
     "    ax1.set_xlabel('Feature 1')\n",