diff --git a/Content/units/Data-Handling/2. Data Manipulation with Pandas/4. DataFrame Manipulations/Notebook.ipynb b/Content/units/Data-Handling/2. Data Manipulation with Pandas/4. DataFrame Manipulations/Notebook.ipynb
index 40bc7d22..5514c4a7 100644
--- a/Content/units/Data-Handling/2. Data Manipulation with Pandas/4. DataFrame Manipulations/Notebook.ipynb	
+++ b/Content/units/Data-Handling/2. Data Manipulation with Pandas/4. DataFrame Manipulations/Notebook.ipynb	
@@ -1120,7 +1120,7 @@
     "})\n",
     "\n",
     "# Grouping by 'Department'\n",
-    "grouped_df = data.groupby('Department').mean()\n",
+    "grouped_df = data.groupby('Department')[['Sales', 'Performance Score']].mean()\n",
     "grouped_df.head()"
    ]
   },