diff --git a/media_recorder.install b/media_recorder.install
index e2f81c64da58355cba42975cad80cb73d3e192d6..cc3cd3bfd95d233ff56312e345da17eecd23755a 100644
--- a/media_recorder.install
+++ b/media_recorder.install
@@ -101,6 +101,9 @@ function media_recorder_update_7200(&$sandbox) {
   variable_del('media_recorder_time_limit');
   variable_del('media_recorder_default_allowed_extensions');
   variable_del('media_recorder_upload_directory');
+  variable_del('media_recorder_width');
+  variable_del('media_recorder_height');
+  variable_del('media_recorder_timelimit');
 
   if (!empty($media_recorder_constraints)) {
     $settings['constraints'] = $media_recorder_constraints;