diff --git a/Time Series of Price Anomaly Detection Expedia.ipynb b/Time Series of Price Anomaly Detection Expedia.ipynb
index bb762f6..d30d4d6 100644
--- a/Time Series of Price Anomaly Detection Expedia.ipynb	
+++ b/Time Series of Price Anomaly Detection Expedia.ipynb	
@@ -1886,7 +1886,7 @@
     "    real_threshold = threshold**windows_size\n",
     "    df_anomaly = []\n",
     "    for j in range(0, len(df)):\n",
-    "        if (j < windows_size\n",
+    "        if (j < windows_size):\n",
     "            df_anomaly.append(0)\n",
     "        else:\n",
     "            sequence = df[j-windows_size:j]\n",