diff --git a/dash-power.py b/dash-power.py
index aa6a43a..9af8481 100644
--- a/dash-power.py
+++ b/dash-power.py
@@ -48,7 +48,7 @@ app.layout = html.Div([
     dcc.Dropdown(
         id='room-selector',
         options=[{'label': room, 'value': room} for room in fetch_data()[1]['room_number'].unique()],
-        value=None,
+        value=fetch_data()[1]['room_number'].iloc[0] if not fetch_data()[1].empty else None,
         placeholder="Select a room"
     ),
     dcc.Graph(id='room-graph')