diff --git a/cmake/Modules/winconf.cmake b/cmake/Modules/winconf.cmake
index e239ce07e..81ddf2867 100644
--- a/cmake/Modules/winconf.cmake
+++ b/cmake/Modules/winconf.cmake
@@ -3,7 +3,7 @@
 # We want to link with static version of
 # libtorrent
 set(LibtorrentRasterbar_USE_STATIC_LIBS True)
-set(LibtorrentRasterbar_CUSTOM_DEFINITIONS 
+set(LibtorrentRasterbar_CUSTOM_DEFINITIONS
     -DBOOST_ALL_NO_LIB -DBOOST_ASIO_HASH_MAP_BUCKETS=1021
     -DBOOST_ASIO_SEPARATE_COMPILATION
     -DBOOST_EXCEPTION_DISABLE
@@ -17,6 +17,7 @@ add_definitions(-DUNICODE
     -DWIN32
     -D_WIN32
     -DWIN32_LEAN_AND_MEAN
+    -DNTDDI_VERSION=0x0501
     -D_WIN32_WINNT=0x0501
     -D_WIN32_IE=0x0500
     -D_CRT_SECURE_NO_DEPRECATE
diff --git a/winconf.pri b/winconf.pri
index 63d12f33b..d27a11bb4 100644
--- a/winconf.pri
+++ b/winconf.pri
@@ -37,6 +37,7 @@ DEFINES += _UNICODE
 DEFINES += WIN32
 DEFINES += _WIN32
 DEFINES += WIN32_LEAN_AND_MEAN
+DEFINES += NTDDI_VERSION=0x0501
 DEFINES += _WIN32_WINNT=0x0501
 DEFINES += _WIN32_IE=0x0501
 DEFINES += _CRT_SECURE_NO_DEPRECATE