diff --git a/gtk2_ardour/wscript b/gtk2_ardour/wscript
index 1055c37eaf..7a5615704a 100644
--- a/gtk2_ardour/wscript
+++ b/gtk2_ardour/wscript
@@ -152,6 +152,7 @@ gtk2_ardour_sources = [
         'level_meter.cc',
         'library_download_dialog.cc',
         'location_ui.cc',
+        'lollipop.cc',
         'loudness_dialog.cc',
         'loudness_settings.cc',
         'lua_script_manager.cc',