diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
index a55d95f2f71b..0940c401a98a 100644
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -278,7 +278,6 @@ ifeq ($(KBUILD_ENABLE_EXTRA_GCC_CHECKS),)
 DTC_FLAGS += -Wno-unit_address_vs_reg \
 	-Wno-simple_bus_reg \
 	-Wno-unit_address_format \
-	-Wno-avoid_unnecessary_addr_size \
 	-Wno-alias_paths \
 	-Wno-pci_bridge \
 	-Wno-pci_device_bus_num \