diff --git a/oml/ui.py b/oml/ui.py
index 683fddd..f9970bf 100644
--- a/oml/ui.py
+++ b/oml/ui.py
@@ -38,6 +38,8 @@ class GtkUI:
             if DEBUG:
                 print('Closed, no files selected')
             filename = None
+        else:
+            filename = None
         dialog.destroy()
         while Gtk.events_pending():
                 Gtk.main_iteration()
@@ -61,6 +63,8 @@ class GtkUI:
             if DEBUG:
                 print('Closed, no files selected')
             filename = None
+        else:
+            filename = None
         dialog.destroy()
         while Gtk.events_pending():
                 Gtk.main_iteration()