diff --git a/libs/ardour/wscript b/libs/ardour/wscript
index 7e64b1ccc4..b837ade771 100644
--- a/libs/ardour/wscript
+++ b/libs/ardour/wscript
@@ -115,6 +115,7 @@ libardour_sources = [
         'interpolation.cc',
         'io.cc',
         'io_processor.cc',
+        'key.cc',
         'kmeterdsp.cc',
         'ladspa_plugin.cc',
         'latent.cc',
@@ -206,7 +207,6 @@ libardour_sources = [
         'route_group_member.cc',
         'rb_effect.cc',
         'rt_tasklist.cc',
-        'scale.cc',
 	'scene_change.cc',
         'search_paths.cc',
         'selection.cc',