diff --git a/05_support_vector_machines.ipynb b/05_support_vector_machines.ipynb
index bb9b855..fa0206a 100644
--- a/05_support_vector_machines.ipynb
+++ b/05_support_vector_machines.ipynb
@@ -205,7 +205,7 @@
     "plt.plot(X_scaled[:, 0][ys==1], X_scaled[:, 1][ys==1], \"bo\")\n",
     "plt.plot(X_scaled[:, 0][ys==0], X_scaled[:, 1][ys==0], \"ms\")\n",
     "plot_svc_decision_boundary(svm_clf, -2, 2)\n",
-    "plt.xlabel(\"$x_0$\", fontsize=20)\n",
+    "plt.xlabel(\"$x'_0$\", fontsize=20)\n",
     "plt.ylabel(\"$x'_1$  \", fontsize=20, rotation=0)\n",
     "plt.title(\"Scaled\", fontsize=16)\n",
     "plt.axis([-2, 2, -2, 2])\n",