diff --git a/rowers/interactiveplots.py b/rowers/interactiveplots.py
index cfbb90cc..b1bb3a9b 100644
--- a/rowers/interactiveplots.py
+++ b/rowers/interactiveplots.py
@@ -4448,12 +4448,12 @@ def interactive_flexchart_stacked(id,r,xparam='time',
 
     row = Workout.objects.get(id=id)
     if rowdata.empty:
-        return "","No valid data",'',''
+        return "","No valid data",'','',comment
 
     try:
         tseconds = rowdata.loc[:,'time']
     except KeyError:
-        return '','No time data - cannot make flex plot','',''
+        return '','No time data - cannot make flex plot','','',comment
 
     try:
         rowdata['x1'] = rowdata.loc[:,xparam]