diff --git a/rowers/dataprep.py b/rowers/dataprep.py
index 727eaae3..982733b7 100644
--- a/rowers/dataprep.py
+++ b/rowers/dataprep.py
@@ -442,16 +442,18 @@ def save_workout_database(f2,r,dosmooth=True,workouttype='rower',
             pass
         return new_workout_from_df(r,newdf,
                                    title=title)
-    
-    checks = row.check_consistency()
-    allchecks = 1
-    for key,value in checks.iteritems():
-        if not value:
-            allchecks = 0
-            if consistencychecks:
-                a_messages.error(r.user,'Failed consistency check: '+key+', autocorrected')
-            else:
-                a_messages.error(r.user,'Failed consistency check: '+key+', not corrected')
+    try:
+        checks = row.check_consistency()
+        allchecks = 1
+        for key,value in checks.iteritems():
+            if not value:
+                allchecks = 0
+                if consistencychecks:
+                    a_messages.error(r.user,'Failed consistency check: '+key+', autocorrected')
+                else:
+                    a_messages.error(r.user,'Failed consistency check: '+key+', not corrected')
+    except ZeroDivisionError:
+        pass
 
     if not allchecks and consistencychecks:
         # row.repair()