diff --git a/prefs.js b/prefs.js
index 8a18f43..3040787 100644
--- a/prefs.js
+++ b/prefs.js
@@ -492,6 +492,7 @@ const Preferences = new Lang.Class({
                 // remove the settings box so it doesn't get destroyed;
                 dialog.get_content_area().remove(box);
                 dialog.destroy();
+                fileChooser.destroy();
             }
             return;
         }));