diff --git a/src/add-ons/kernel/bus_managers/isa/Jamfile b/src/add-ons/kernel/bus_managers/isa/Jamfile
index db951b360c..cd67e88971 100644
--- a/src/add-ons/kernel/bus_managers/isa/Jamfile
+++ b/src/add-ons/kernel/bus_managers/isa/Jamfile
@@ -1,6 +1,8 @@
 SubDir OBOS_TOP src add-ons kernel bus_managers isa ;
 
 UsePrivateHeaders kernel ;
+UsePrivateHeaders [ FDirName kernel arch $(OBOS_ARCH) ] ;
+UsePrivateHeaders [ FDirName kernel boot platform $(OBOS_BOOT_PLATFORM) ] ;
 
 KernelAddon isa : kernel bus_managers :
 	isa.c