diff --git a/meta/recipes-bsp/grub/grub2.inc b/meta/recipes-bsp/grub/grub2.inc
index e2a2a84277..07b4000e04 100644
--- a/meta/recipes-bsp/grub/grub2.inc
+++ b/meta/recipes-bsp/grub/grub2.inc
@@ -51,6 +51,10 @@ GRUBPLATFORM ??= "pc"
 inherit autotools gettext texinfo pkgconfig
 
 CFLAGS:remove = "-O2"
+# It doesn't support sse, its make.defaults sets:
+# CFLAGS += -mno-mmx -mno-sse
+# So also remove -mfpmath=sse from TUNE_CCARGS
+TUNE_CCARGS:remove = "-mfpmath=sse"
 
 EXTRA_OECONF = "--with-platform=${GRUBPLATFORM} \
                 --disable-grub-mkfont \