diff --git a/tests/Makefile b/tests/Makefile
index f83ac34..e9d69da 100644
--- a/tests/Makefile
+++ b/tests/Makefile
@@ -8,7 +8,7 @@ CXX = clang++ -stdlib=libc++ -march=native
 #CXX = armv7a-hardfloat-linux-gnueabi-g++ -static -mfpu=neon -march=armv7-a
 #QEMU = qemu-arm
 
-#CXX = aarch64-unknown-linux-gnu-g++ -static
+#CXX = aarch64-unknown-linux-gnu-g++ -static -march=armv8-a+crc+simd -mtune=cortex-a72
 #QEMU = qemu-aarch64
 
 .PHONY: clean test