diff --git a/caravel/viz.py b/caravel/viz.py
index 6cd9db366bb37..e384ec4d90956 100755
--- a/caravel/viz.py
+++ b/caravel/viz.py
@@ -1655,6 +1655,7 @@ class FilterBoxViz(BaseViz):
         'groupby': {
             'label': _('Filter fields'),
             'description': _("The fields you want to filter on"),
+            'default': [],
         },
     }