diff --git a/rowers/views.py b/rowers/views.py
index 9bfbde2c..4ac8b623 100644
--- a/rowers/views.py
+++ b/rowers/views.py
@@ -8742,12 +8742,13 @@ def workout_workflow_view(request,id):
                   })
 
 # The famous flex chart
+@login_required()
 def workout_flexchart3_view(request,*args,**kwargs):
     
     try:
         id = kwargs['id']
     except KeyError:
-        return HttpResponse("Invalid workout number")
+        raise Http404("Invalid workout number")
     
     if 'promember' in kwargs:
         promember = kwargs['promember']