diff --git a/src/add-ons/kernel/bus_managers/usb/Jamfile b/src/add-ons/kernel/bus_managers/usb/Jamfile
index 49804bc604..7745fc2c8a 100644
--- a/src/add-ons/kernel/bus_managers/usb/Jamfile
+++ b/src/add-ons/kernel/bus_managers/usb/Jamfile
@@ -1,5 +1,7 @@
 SubDir OBOS_TOP src add-ons kernel bus_managers usb ;
 
+SubDirC++Flags -fno-rtti ;
+
 UsePrivateHeaders [ FDirName kernel ] ;
 
 AddResources usb : usb.rdef ;
diff --git a/src/add-ons/kernel/busses/usb/Jamfile b/src/add-ons/kernel/busses/usb/Jamfile
index 4ee80db655..10f430db38 100644
--- a/src/add-ons/kernel/busses/usb/Jamfile
+++ b/src/add-ons/kernel/busses/usb/Jamfile
@@ -1,5 +1,7 @@
 SubDir OBOS_TOP src add-ons kernel busses usb ;
 
+SubDirC++Flags -fno-rtti ;
+
 AddResources uhci : uhci.rdef ;
 
 UsePrivateHeaders [ FDirName kernel ] ;