diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
index 10950559b223..c57f14ac6f99 100644
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -309,8 +309,7 @@ DTC_FLAGS += -Wno-unit_address_vs_reg \
 	-Wno-alias_paths \
 	-Wno-graph_child_address \
 	-Wno-simple_bus_reg \
-	-Wno-unique_unit_address \
-	-Wno-pci_device_reg
+	-Wno-unique_unit_address
 endif
 
 ifneq ($(findstring 2,$(KBUILD_EXTRA_WARN)),)