diff --git a/libs/surfaces/generic_midi/SConscript b/libs/surfaces/generic_midi/SConscript
index 27f88651fc..ce37359824 100644
--- a/libs/surfaces/generic_midi/SConscript
+++ b/libs/surfaces/generic_midi/SConscript
@@ -42,7 +42,8 @@ genericmidi.Merge ([
 	libraries['usb'],
 	libraries['xml'],
 	libraries['glib2'],
-	libraries['glibmm2']
+	libraries['glibmm2'],
+	libraries['boost']
 	])
 
 libardour_genericmidi = genericmidi.SharedLibrary('ardour_genericmidi', genericmidi_files)
diff --git a/libs/surfaces/tranzport/SConscript b/libs/surfaces/tranzport/SConscript
index c2ab35124d..dae2ba2024 100644
--- a/libs/surfaces/tranzport/SConscript
+++ b/libs/surfaces/tranzport/SConscript
@@ -63,6 +63,7 @@ tranzport.Merge ([
     libraries['xml'],
     libraries['glib2'],
     libraries['glibmm2'],
+    libraries['boost'],
     libraries['usb'],
     libraries['sndfile']
     ])