diff --git a/ext/CMakeLists.txt b/ext/CMakeLists.txt
index 34b53eea..155f938b 100644
--- a/ext/CMakeLists.txt
+++ b/ext/CMakeLists.txt
@@ -80,7 +80,11 @@ if (UNIX)
 			set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-tautological-compare")
 		endif()
 	else()
-		set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -march=native")
+		set(CRYPTOPP_ARCH "native")
+		if ("${CMAKE_SYSTEM_PROCESSOR}" MATCHES "^arm.*")
+			set(CRYPTOPP_ARCH "armv6zk")
+		endif()
+		set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -march=${CRYPTOPP_ARCH}")
 	endif()
 endif()