diff --git a/rowers/interactiveplots.py b/rowers/interactiveplots.py
index 339b0bec..adf7724e 100644
--- a/rowers/interactiveplots.py
+++ b/rowers/interactiveplots.py
@@ -803,8 +803,8 @@ def interactive_activitychart2(workouts,startdate,enddate,stack='type',toolbar_l
     if totaldays>30 and yaxis=='duration':
         df['duration'] = df['duration']/60
     elif yaxis == 'TRIMP':
-        df.drop('duration',inplace=True,axis=columns)
-        df.drop('rscore',inplace=True,axis=columns)
+        df.drop('duration',inplace=True,axis='columns')
+        df.drop('rscore',inplace=True,axis='columns')
     elif yaxis == 'rScore':
         df.drop('duration',inplace=True,axis='columns')
         df.drop('trimp',inplace=True,axis='columns' )