diff --git a/hermit/newlib/Makefile b/hermit/newlib/Makefile
index be3b2a85f..e201204ec 100644
--- a/hermit/newlib/Makefile
+++ b/hermit/newlib/Makefile
@@ -8,6 +8,7 @@ CD = cd
 MKDIR = mkdir
 TMP = $(TOPDIR)/tmp
 OPT = --disable-shared --disable-multilib --disable-newlib-multithread --disable-newlib-reent-small
+ARCHOPT = -mavx2 -mfma
 
 # Prettify output
 V = 0
@@ -17,8 +18,8 @@ ifeq ($V,0)
 endif
 
 default: $(ARCH)
-	$Q$(MAKE) ARCH=$(ARCH) TARGET=$(TARGET) CFLAGS+="-DSTREAM_ARRAY_SIZE=100000 -ffreestanding -O3 -Wall -I$(NEWLIB)/include -I../../include -I../../arch/$(ARCH)/include" LDFLAGS+="-nostdlib -L$(NEWLIB)/lib" -C examples depend
-	$Q$(MAKE) ARCH=$(ARCH) TARGET=$(TARGET) CFLAGS+="-DSTREAM_ARRAY_SIZE=100000 -ffreestanding -O3 -Wall -I$(NEWLIB)/include -I../../include -I../../arch/$(ARCH)/include" LDFLAGS+="-nostdlib -L$(NEWLIB)/lib" -C examples
+	$Q$(MAKE) ARCH=$(ARCH) TARGET=$(TARGET) CFLAGS+="$(ARCHOPT) -DSTREAM_ARRAY_SIZE=100000 -ffreestanding -O3 -Wall -I$(NEWLIB)/include -I../../include -I../../arch/$(ARCH)/include" LDFLAGS+="-nostdlib -L$(NEWLIB)/lib" -C examples depend
+	$Q$(MAKE) ARCH=$(ARCH) TARGET=$(TARGET) CFLAGS+="$(ARCHOPT) -DSTREAM_ARRAY_SIZE=100000 -ffreestanding -O3 -Wall -I$(NEWLIB)/include -I../../include -I../../arch/$(ARCH)/include" LDFLAGS+="-nostdlib -L$(NEWLIB)/lib" -C examples
 
 $(ARCH):
 	@echo Build newlib