diff --git a/insurance.ipynb b/insurance.ipynb
index bc89d6a..791426c 100644
--- a/insurance.ipynb
+++ b/insurance.ipynb
@@ -1517,7 +1517,8 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "df_cleaned = pd.get_dummies(df_cleaned,columns = ['region'],drop_first=True)"
+    "df_cleaned = pd.get_dummies(df_cleaned, columns=['region'], drop_first=False)",
+    "df_cleaned = df_cleaned.drop(columns=['region_northeast'])  # northeast as reference"
    ]
   },
   {