diff --git a/build/modules.conf.in b/build/modules.conf.in
index ef4178b554..b2d09e3a0e 100644
--- a/build/modules.conf.in
+++ b/build/modules.conf.in
@@ -45,6 +45,7 @@ formats/mod_native_file
 formats/mod_sndfile
 #formats/mod_shout
 formats/mod_local_stream
+formats/mod_tone_stream
 #languages/mod_python
 languages/mod_spidermonkey
 languages/mod_spidermonkey_teletone