diff --git a/rowers/interactiveplots.py b/rowers/interactiveplots.py
index 785c259a..3aa289ee 100644
--- a/rowers/interactiveplots.py
+++ b/rowers/interactiveplots.py
@@ -1614,9 +1614,11 @@ def fitnessfit_chart(workouts,user,workoutmode='water',startdate=None,
     df['testpower'] = df.apply(lambda x: np.nan if abs(x['testpower'] - x['testdup']) < 1 \
                                else x['testpower'],axis=1)
 
-    df['testpower'].iloc[-1] = df['testdup'].iloc[-1]
+    try:
+        df['testpower'].iloc[-1] = df['testdup'].iloc[-1]
+    except IndexError:
+        pass
 
-    
 
     dates = [d for d in df['date']]
     testpower = df['testpower'].values.tolist()