diff --git a/parallel-rsp/win32/mman/sys/CMakeLists.txt b/parallel-rsp/win32/mman/sys/CMakeLists.txt
index 1bc1336..72b9c26 100644
--- a/parallel-rsp/win32/mman/sys/CMakeLists.txt
+++ b/parallel-rsp/win32/mman/sys/CMakeLists.txt
@@ -1,8 +1,7 @@
-cmake_minimum_required (VERSION 3.22)
-set(CMAKE_OSX_DEPLOYMENT_TARGET "11.0")
-
 project (mman-win32 C)
 
+cmake_minimum_required (VERSION 2.8)
+
 option (BUILD_SHARED_LIBS "shared/static libs" ON) 
 option (BUILD_TESTS "tests?" OFF)