diff --git a/CMakeLists.txt b/CMakeLists.txt
index 77f8ffb..805c8e3 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -2,7 +2,7 @@ cmake_minimum_required(VERSION 2.8)
 
 project(multi_array)
 
-set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Werror -std=c++11 -g -Wpedantic -Ofast -mavx2 -funroll-loops -fopenmp")
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Werror -std=c++11 -g -Wpedantic -Ofast -march=native -funroll-loops -fopenmp")
 
 enable_testing()