diff --git a/rowers/interactiveplots.py b/rowers/interactiveplots.py
index 77f12f10..021513aa 100644
--- a/rowers/interactiveplots.py
+++ b/rowers/interactiveplots.py
@@ -2064,24 +2064,25 @@ def leaflet_chart(lat,lon,name=""):
 def leaflet_chart_compare(course,workoutids,labeldict={},startenddict={}):
     data = []
     for id in workoutids:
-        try:
-            w = Workout.objects.get(id=id)
-            rowdata = rdata(w.csvfilename)
-            time = rowdata.df['TimeStamp (sec)']
-            df = pd.DataFrame({
-                'workoutid':id,
-                'lat':rowdata.df[' latitude'],
-                'lon':rowdata.df[' longitude'],
-                'time':time-time[0],
-                })
-        except Workout.DoesNotExist:
-            df = pd.DataFrame({
-                'workoutid':id,
-                'lat':[],
-                'lon':[]}
-            )
+        if id != 0 and id is not None:
+            try:
+                w = Workout.objects.get(id=id)
+                rowdata = rdata(w.csvfilename)
+                time = rowdata.df['TimeStamp (sec)']
+                df = pd.DataFrame({
+                    'workoutid':id,
+                    'lat':rowdata.df[' latitude'],
+                    'lon':rowdata.df[' longitude'],
+                    'time':time-time[0],
+                    })
+            except Workout.DoesNotExist:
+                df = pd.DataFrame({
+                    'workoutid':id,
+                    'lat':[],
+                    'lon':[]}
+                    )
 
-        data.append(df)
+            data.append(df)
 
 
     df = pd.concat(data,axis=0)