g_return_if_fail (MODEST_IS_FOLDER_VIEW (self));
priv = MODEST_FOLDER_VIEW_GET_PRIVATE (self);
- priv->filter = filter;
+ priv->filter |= filter;
filter_model = gtk_tree_view_get_model (GTK_TREE_VIEW (self));
if (GTK_IS_TREE_MODEL_FILTER(filter_model)) {