diff --git a/CMakeLists.txt b/CMakeLists.txt
index d0adf45..31b158a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -99,7 +99,7 @@ include_directories(${Boost_INCLUDE_DIR})
 ############
 
 if (APPLE AND NOT IOS)
-  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -march=x86-64 -fvisibility=default -std=c++11")
+  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fvisibility=default -std=c++11")
   if (NOT OPENSSL_ROOT_DIR)
       EXECUTE_PROCESS(COMMAND brew --prefix openssl
         OUTPUT_VARIABLE OPENSSL_ROOT_DIR