diff --git a/rowers/views/analysisviews.py b/rowers/views/analysisviews.py
index a450e83d..e7af9c3a 100644
--- a/rowers/views/analysisviews.py
+++ b/rowers/views/analysisviews.py
@@ -5031,7 +5031,10 @@ def history_view_data(request,userid=0):
                                          ignoreadvanced=True)
 
         ddict['hrmean'] = int(wavg(ddf,'hr','deltat'))
-        ddict['hrmax'] = ddf['hr'].max().astype(int)
+        try:
+            ddict['hrmax'] = ddf['hr'].max().astype(int)
+        except ValueError:
+            ddict['hrmax'] = 0
         ddict['powermean'] = int(wavg(df,'power','deltat'))
         ddict['powermax'] = ddf['power'].max().astype(int)
         ddict['nrworkouts'] = a_workouts.count()