diff --git a/PowerSample/CMakeLists.txt b/PowerSample/CMakeLists.txt
index af912b9..71e3f69 100644
--- a/PowerSample/CMakeLists.txt
+++ b/PowerSample/CMakeLists.txt
@@ -3,7 +3,7 @@ project("PowerSample")
 add_compile_options(
     "/fp:strict"
     "/GS-"
-    "-march=x86-64-v3"
+    "-march=haswell"
     "-fno-strict-aliasing")
 
 file(GLOB RecompiledFiles *.cpp)