diff --git a/libs/ardour/SConscript b/libs/ardour/SConscript
index 6f0b1fdc52..b1cab4bb7d 100644
--- a/libs/ardour/SConscript
+++ b/libs/ardour/SConscript
@@ -221,6 +221,6 @@ if env['NLS']:
 	i18n (ardour, ardour_files + vst_files + coreaudio_files, env)
 	      
 env.Alias('tarball', env.Distribute (env['DISTTREE'],
-				     [ 'SConscript', 'i18n.h', 'gettext.h', 'sse_functions.s' ] +
+				     [ 'SConscript', 'i18n.h', 'gettext.h', 'sse_functions.s', 'sse_functions_64bit.s' ] +
 				     ardour_files + vst_files + coreaudio_files +
 				     glob.glob('po/*.po') + glob.glob('ardour/*.h')))