diff --git a/qubesmanager/table_widgets.py b/qubesmanager/table_widgets.py
index 9c4ae02..36d52e8 100644
--- a/qubesmanager/table_widgets.py
+++ b/qubesmanager/table_widgets.py
@@ -376,13 +376,10 @@ class VmUpdateInfoWidget(QtGui.QWidget):
 
         outdated_state = False
 
-        try:
-            for vol in vm.volumes:
-                if vol.is_outdated():
-                    outdated_state = "outdated"
-                    break
-        except AttributeError:
-            pass
+        for vol in vm.volumes.values():
+            if vol.is_outdated():
+                outdated_state = "outdated"
+                break
 
         if not outdated_state and getattr(vm, 'template', None)\
                 and vm.template.is_running():