diff --git a/app.py b/app.py
index a38cf42..9dd48de 100644
--- a/app.py
+++ b/app.py
@@ -70,8 +70,8 @@ def overview():
 
     graph = pygal.Line(show_y_guides=False,
                        show_legend=False, style=custom_style)
-    graph.x_labels = [c['logged_at'] for c in cadences]
-    graph.add('RPM',  [c['rpm'] for c in cadences])
+    graph.x_labels = [c['logged_at'] for c in cadences[::2]]
+    graph.add('RPM',  [c['rpm'] for c in cadences[::2]])
     graph_data = graph.render_data_uri()
 
     return render_template('overview.html', last_cadence=last_cadence, cadences=cadences[-15:], graph_data=graph_data)