diff --git a/Chapter_03_Linear_Regression/Coding_linear_regression.ipynb b/Chapter_03_Linear_Regression/Coding_linear_regression.ipynb
index 07ac843..3a79a86 100644
--- a/Chapter_03_Linear_Regression/Coding_linear_regression.ipynb
+++ b/Chapter_03_Linear_Regression/Coding_linear_regression.ipynb
@@ -317,7 +317,7 @@
     "    base_price = random.random()\n",
     "    errors = []\n",
     "    for i in range(epochs):\n",
-    "        predictions = features[0]*price_per_room+base_price\n",
+    "        predictions = features*price_per_room+base_price\n",
     "        errors.append(rmse(labels, predictions))\n",
     "        i = random.randint(0, len(features)-1)\n",
     "        num_rooms = features[i]\n",