diff --git a/src/add-ons/kernel/drivers/audio/Jamfile b/src/add-ons/kernel/drivers/audio/Jamfile
index 8d2425835f..2ef2e39db5 100644
--- a/src/add-ons/kernel/drivers/audio/Jamfile
+++ b/src/add-ons/kernel/drivers/audio/Jamfile
@@ -1,7 +1,7 @@
 SubDir OBOS_TOP src add-ons kernel drivers audio ;
 
 SubInclude OBOS_TOP src add-ons kernel drivers audio ac97 ;
-SubInclude OBOS_TOP src add-ons kernel drivers audio echo ;
+SubIncludeGPL OBOS_TOP src add-ons kernel drivers audio echo ;
 SubInclude OBOS_TOP src add-ons kernel drivers audio emuxki ;
 SubInclude OBOS_TOP src add-ons kernel drivers audio usb_audio ;
 SubInclude OBOS_TOP src add-ons kernel drivers audio module_driver ;