diff --git a/fluents/view.py b/fluents/view.py
index d1dfb9a..de6eb0d 100644
--- a/fluents/view.py
+++ b/fluents/view.py
@@ -214,7 +214,7 @@ class ViewFrame (gtk.Frame):
             
         elif isinstance(obj, fluents.dataset.Dataset):
             view = self.get_view()
-            if view.is_mappable_with(obj):
+            if view != None and view.is_mappable_with(obj):
                 view._update_color_from_dataset(obj)
 
         elif isinstance(obj, fluents.dataset.Selection):