diff --git a/plugin/bbb/start.php b/plugin/bbb/start.php
index 1814c03220..4721a6d1b1 100755
--- a/plugin/bbb/start.php
+++ b/plugin/bbb/start.php
@@ -80,7 +80,9 @@ if ($bbb->pluginEnabled) {
                     $bbb->saveParticipant($meetingInfo['id'], api_get_user_id(), $interface);
                     $bbb->redirectToBBB($url);
                 } else {
-                    Display::addFlash(Display::return_message($plugin->get_lang('ThereIsNoVideoConferenceActive')));
+                    Display::addFlash(
+                        Display::return_message($bbb->plugin->get_lang('ThereIsNoVideoConferenceActive'))
+                    );
                     $url = $bbb->getListingUrl();
                     header('Location: '.$url);
                     exit;