1 files changed, 4 insertions, 2 deletions
diff --git a/mk/elf.mk b/mk/elf.mk
index 12d10778..54fd4ce2 100644
--- a/mk/elf.mk
+++ b/mk/elf.mk
@@ -60,8 +60,10 @@ CFLAGS     = $(GCCOPT) $(GCCWARN) -W -Wall \
 	     -I$(com32)/libutil/include -I$(com32)/include \
 		-I$(com32)/include/sys $(GPLINCLUDE) -I$(core)/include \
 		-I$(objdir) -DLDLINUX=\"$(LDLINUX)\"
-ifndef EFI_BUILD
-CFLAGS	  += -mregparm=3 -DREGPARM=3
+ifdef EFI_BUILD
+GCCOPT += -mno-red-zone
+else
+GCCOPT += -mregparm=3 -DREGPARM=3
 endif
 
 SFLAGS     = $(GCCOPT) -D__COM32__ -D__FIRMWARE_$(FIRMWARE)__