diff --git a/rowers/interactiveplots.py b/rowers/interactiveplots.py
index cda90266..00df57c5 100644
--- a/rowers/interactiveplots.py
+++ b/rowers/interactiveplots.py
@@ -329,7 +329,7 @@ def interactive_activitychart(workouts,startdate,enddate,stack='type'):
     p.plot_width=550
     p.plot_height=350
     p.toolbar_location = None
-
+    p.sizing_mode = 'scale_width'
     
 #    p = hv.Bars(df,values='duration',
 #            label = CatAttr(columns=['date'], sort=False),