diff --git a/rowers/interactiveplots.py b/rowers/interactiveplots.py
index 216a1f10..932a3fb6 100644
--- a/rowers/interactiveplots.py
+++ b/rowers/interactiveplots.py
@@ -1539,10 +1539,7 @@ def fitnessfit_chart(workouts,user,workoutmode='water',startdate=None,
     workouts = workouts.order_by('date')
 
     for w in workouts:
-        ws = workouts.filter(date__gte=w.date-datetime.timedelta(days=nrdays),
-                             date__lte=w.date)
-        wws = [ww for ww in ws]
-        delta,cpvalue,avgpower,workoutnames = dataprep.fetchcp_new(user.rower,wws)
+        delta,cpvalue,avgpower,workoutnames = dataprep.fetchcp_new(user.rower,[w])
         powerdf = pd.DataFrame({
             'Delta':delta,
             'CP':cpvalue,