diff --git a/pc-bios/optionrom/Makefile b/pc-bios/optionrom/Makefile
index 78887c41a8f104d3c7245717a5f4ec940a3619a3..9516ac557a272fd9195d6418f04ef809cfd00274 100644
--- a/pc-bios/optionrom/Makefile
+++ b/pc-bios/optionrom/Makefile
@@ -10,6 +10,7 @@ VPATH=$(SRC_PATH)/pc-bios/optionrom
 CFLAGS = -Wall -Wstrict-prototypes -Werror -fomit-frame-pointer -fno-builtin
 CFLAGS += -I$(SRC_PATH)
 CFLAGS += $(call cc-option, -fno-stack-protector,"")
+QEMU_CFLAGS = $(CFLAGS)
 
 build-all: multiboot.bin