diff --git a/gtk2_ardour/export_video_dialog.cc b/gtk2_ardour/export_video_dialog.cc
index 7f6fcc2a8a..f1179a6635 100644
--- a/gtk2_ardour/export_video_dialog.cc
+++ b/gtk2_ardour/export_video_dialog.cc
@@ -561,7 +561,7 @@ ExportVideoDialog::launch_export ()
 		if (gtk_events_pending()) {
 			gtk_main_iteration ();
 		} else {
-			usleep (10000);
+			Glib::usleep (10000);
 		}
 	}
 	audio_progress_connection.disconnect();