diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
index 83fd5ff..2422ac9 100644
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -302,6 +302,7 @@
 	-Wno-alias_paths \
 	-Wno-graph_child_address \
 	-Wno-graph_port \
+	-Wno-simple_bus_reg \
 	-Wno-unique_unit_address \
 	-Wno-simple_bus_reg \
 	-Wno-pci_device_reg