diff --git a/src/add-ons/kernel/drivers/audio/Jamfile b/src/add-ons/kernel/drivers/audio/Jamfile
index 1c1b5a799f..016d2c337b 100644
--- a/src/add-ons/kernel/drivers/audio/Jamfile
+++ b/src/add-ons/kernel/drivers/audio/Jamfile
@@ -1,5 +1,6 @@
 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 ;
 SubInclude OBOS_TOP src add-ons kernel drivers audio emuxki ;
 SubInclude OBOS_TOP src add-ons kernel drivers audio module_driver ;