diff --git a/rowers/dataprep.py b/rowers/dataprep.py
index 9f61de6f..cd1eaec5 100644
--- a/rowers/dataprep.py
+++ b/rowers/dataprep.py
@@ -1323,9 +1323,9 @@ def split_workout(r, parent, splitsecond, splitmode):
         messages.append(message)
         ids.append(id)
     if 'keep second' in splitmode:
-        data2['cumdist'] = data2['cumdist'] - data2.ix[0, 'cumdist']
-        data2['distance'] = data2['distance'] - data2.ix[0, 'distance']
-        data2['time'] = data2['time'] - data2.ix[0, 'time']
+        data2['cumdist'] = data2['cumdist'] - data2.iloc[0, 'cumdist']
+        data2['distance'] = data2['distance'] - data2.iloc[0, 'distance']
+        data2['time'] = data2['time'] - data2.iloc[0, 'time']
         if 'secondprivate' in splitmode:
             setprivate = True
         else: