diff --git a/src/add-ons/kernel/drivers/audio/echo/24/Jamfile b/src/add-ons/kernel/drivers/audio/echo/24/Jamfile
index 84d76fcbaa..c0e488439e 100644
--- a/src/add-ons/kernel/drivers/audio/echo/24/Jamfile
+++ b/src/add-ons/kernel/drivers/audio/echo/24/Jamfile
@@ -5,7 +5,7 @@ SubDirHdrs $(OBOS_TOP) src add-ons kernel drivers audio echo generic ;
 SubDirHdrs $(OBOS_TOP) src add-ons kernel drivers audio echo generic DSP ;
 SubDirHdrs $(OBOS_TOP) src add-ons kernel drivers audio echo generic ASIC ;
 
-UsePrivateHeaders [ FDirName kernel ] ;			# For kernel_cpp.cpp
+UsePrivateHeaders [ FDirName kernel util ] ;			# For kernel_cpp.cpp
 
 # set some additional defines
 {
diff --git a/src/add-ons/kernel/drivers/audio/echo/gals/Jamfile b/src/add-ons/kernel/drivers/audio/echo/gals/Jamfile
index 9ae58392df..dff51f9f83 100644
--- a/src/add-ons/kernel/drivers/audio/echo/gals/Jamfile
+++ b/src/add-ons/kernel/drivers/audio/echo/gals/Jamfile
@@ -5,7 +5,7 @@ SubDirHdrs $(OBOS_TOP) src add-ons kernel drivers audio echo generic ;
 SubDirHdrs $(OBOS_TOP) src add-ons kernel drivers audio echo generic DSP ;
 SubDirHdrs $(OBOS_TOP) src add-ons kernel drivers audio echo generic ASIC ;
 
-UsePrivateHeaders [ FDirName kernel ] ;			# For kernel_cpp.cpp
+UsePrivateHeaders [ FDirName kernel util ] ;			# For kernel_cpp.cpp
 
 # set some additional defines
 {