diff --git a/bindings/CMakeLists.txt b/bindings/CMakeLists.txt
index 98699d7..e2ebd8a 100644
--- a/bindings/CMakeLists.txt
+++ b/bindings/CMakeLists.txt
@@ -23,8 +23,11 @@ if (MSVC)
 
   include_directories(${Boost_INCLUDE_DIRS})
   link_directories(${BOOST_LIBRARYDIR})
+
+  add_compile_definitions(WIN32_LEAN_AND_MEAN)
 endif(MSVC)
 
+
 # LibGCrypt
 list(APPEND CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/lib/libtorrent/cmake/Modules)
 
diff --git a/bindings/src/torrent/bind.h b/bindings/src/torrent/bind.h
index e2187a3..0a699e3 100644
--- a/bindings/src/torrent/bind.h
+++ b/bindings/src/torrent/bind.h
@@ -16,7 +16,6 @@
 
 #include <napi.h>
 
-#include "windows.h"
 #include "client_session.h"
 #include "version.h"
 
diff --git a/bindings/src/win_delay_load_hook.cc b/bindings/src/win_delay_load_hook.cc
index 2c7b3f5..a43882d 100644
--- a/bindings/src/win_delay_load_hook.cc
+++ b/bindings/src/win_delay_load_hook.cc
@@ -16,9 +16,7 @@
 
 #ifdef _MSC_VER
 
-#ifndef WIN32_LEAN_AND_MEAN
 #define WIN32_LEAN_AND_MEAN
-#endif
 
 #include <windows.h>
 #include <Shlwapi.h>